Constanţa (prounounced Constantza) is a coastal Black Sea town in southern Dobruja, Romania, the second most important city in the country and, during summer, a beautiful touristic city. It is the capital of the Constanta county and Romania's largest seaport, a great city to begin to explore the wonders of the sea.
Constanta, being founded as a city almost 2600 years ago, is the oldest attested city in Romania, is the biggest port at the Black Sea (third largest in Europe) and and is also the third largest city in Romania with its 400,000 inhabitants. Constanta was founded by the Greeks as a port on the Black Sea Coast for trading with inland people and called Tomis (VIth c. BC). The city was renamed later after Constantina, niece of Constantine the Great (274-337). It was still a flourishing port city in the Xth and XIth centuries trading with the Byzantine Empire and the city of Genoa.
You can get to Constanta by land, air, and water.
The most popular route is the Bucharest-Constanta A2 highway. The highway currently ends at the city of Cernavoda but it should be completed by 2013. There is a tax of 5 lei (1.1 EUR) to cross the bridge system over the Danube. In the summer of 2011 the Constanta Bypass was partially opened as a highway and also half of the Medgidia-Constanta highway. The Bypass and the Medgidia-Constanta highway are expected to be fully finished by November 2011.
The roads are good in Constanta compared to the rest of the country. But beware of speed bumps and speed traps in the center which are meant for reducing the speed of cars.
Plenty of buses connect Constanta with the rest of the country. Throughout the day Bucharest bound busses leave Constanta every 45 minutes from the Railway Station (also called Autogara) . The trip takes about 3,5 hours thanks to the newly constructed A2 autobahn, also called "The Sun's Highway". Tickets costs RON 50-55, which is 10-15% less expensive than the train (see section below). Though busses are slightly slower than the train they are clean and comfortable and the newest ones have free WiFi which the train does not.
There are also several daily buses leaving from Constanta to Istanbul from the Railway Station (when you exit the train station turn left and walk 200m). The duration is less than 12 hours including time spent crossing borders and the prices for 2011 are RON 200 (EUR 48) a return ticket, including 1 night accommodation in Istanbul. 
Likewise, there are buses to Thessaloniki in Greece, Chisinau in Moldova and some buses to Varna in Bulgaria. One can also take a bus to Ostrov-Vama (5 Euros), which is a village near the border with Bulgaria, cross the border and you are in Silistra, a town in Bulgaria. From there there are several connections to other Bulgarian cities such as Rousse, Dobrich, Sofia etc.
Frequent maxitaxis leave to resorts south of Constanta from the Railway Station (when you walk out of the train station turn right and continue about 200m).
Constanţa's train station has connections with the rest of the country. There are five daily trains to/from Bucharest during off-season and more trains in summer and the trip takes between 2.5-3 hours depending on the type of train. A second class ticket costs RON 61.60 as of September 2011. Most of the train connections from Constanţa are to Bucharest, which acts as the main railway hub for the region.
Starting from Constanţa train station seven daily trains serve destinations south of Constanţa, going as far as Mangalia. The earliest train heading to Mangalia departs at 06:30 and the last one at 19:03. The trip takes about 1hr20min.
For more information on trains and schedules check the website of Romanian Railways under http://www.infofer.ro/ Tel: 0040241666952
Constanta has an international airport called Mihail Kogalniceanu Intl. Airport  which is about 20 km north-west of the city. Ryanair flies to Constanta from Pisa 3 times a week during the summer season. Starting with April 2011, there are also flights to Milano 2 times a week. Romanian low cost carrier Blue Air began its first flight to Brussels in July 2008 with a frequency of 1 flight per week. Romanian carrier Carpatair offers flights to many European destinations from Constanta through Timisoara.
The airport is connected to the city by a special bus which operates 2 times per day. The bus stops near the Central Station (Gara CFR). You can check the schedule here. 
Constanta is one of the largest commercial port in the Black Sea and the third largest in Europe. There are ships connecting Constanta with Varna and Odessa managed by Navlomar: http://www.navlomar.com/Constanta-Odessa/ (€45 one-way, €60 return, summer only). There are said to be also routes to Istanbul, Turkey and Greece, but don't count on them.
You can use the public transport system (buses, trams, trolleybuses and maxi-taxis). To get to Mamaia you can take the 310 mini van called maxi-taxi for 2 RON (0,5euros) one way but it is very crowded during summer. The stop is in front of the main exit of the Railway Station, after the traffic light, on the side with the park. You can also take the special bus which takes you to Mamaia and has regular stops around the city and resort, it is a double decker buss and you can find it as you exit the train station in the bus station. (4 RON one-way ~ 1euro). You can also get to Mamaia by taking the 40 or 100 buses (3,5RON 2 trips ~ 0,8euros), but those two buses will leave you at the beginning of Mamaia and from there you must walk, take a taxi or a mini van.
The best option is a taxi; a legal taxi must be painted yellow and must have the fee written with green characters on the driver's door . Always insist on starting the meter and try to avoid the cabs with red tariffs right next to the train station who, as in every major city, try to take advantage of tourists. Walk 100 meters from the station and only then wave to a cab. The typical fee from the train station to Mamaia is between 5-10 euros. You can ask in advance the taxi driver how much does he think the ride will cost. If it is more than 10 euros do not accept. Taxis do not accept credit card payments.
In Constanta there are no paths for bike, but it is safe to ride the bike on the main road. There is a free rental service sponsored by Raiffeisen Bank, located in Parcul Tabacarie, which runs from June to October. You can rent the bike with your ID or passport for 2 hours with the option to extend for another 2 hours.
Walking in Constanta is one of the great pleasures of visiting the city. It is possible to cross the entire city in only a few hours. Be aware of dogs.
Constanta has been continuously inhabited for 2500 years so there is a lot to see:
Monumental building - with over 2,000 square meters of mosaic - was erected in the 4th century AD, probably under Emperor Constantine the Great, being repaired at various stages by the end of the 6th century, when their existence ends, falling in decay ruin with the commercial activities of the city. From the initial 2,000 square meters area still maintains about 700 m square - but enough to infer that we are in front of a large port construction. Upper terrace was occupied by an impressive hall (100m long and 20 m wide), probably covered in antiquity, with a huge dome supported by pillars. From this room there are still today part of the long wall and one of the side walls. The first presents an arcade ordinance open to the sea, is covered entirely with white marble and polychrome plywood. Pillars decorated with beautiful arches Areu capitals decorated with acanthus leaves zoomorphic or anthropomorphic figures and center.
*The Dolphinarium began its activity on June 1, 1972, being the first museum form of this kind in Romania and the first one in the S-E of Europe at that time. The exhibition presents the world of the shell fish living in diverse seas. The shows are organized in the amphitheatre with a pool, with dolphins from the Phocaena relicta species and Delphinus delphis ponticus species, with seals from the South Atlantic. Shows hours: 11AM, 3PM, 7PM. Entrance fee: 50lei (~12euros) for adults; 25lei (~6euros) for students. Children under 5 free. *The Aquarium - The exhibition space is marked out for the presentation of the permanent aquatic flora and fauna exhibition in 57 tanks, and also for the temporary exhibitions with aquatic biological and ecological themes. An inedited museum institution for natural sciences in our country due to its exhibition patrimony made up entirely of living organisms, the aquarium in Constanta also has naturalized collections of marine and fresh water fish and invertebrates belonging to different geographical areas of the Earth.To facilitate the presentation of aquatic life and the visitors’ access to information, the exhibition patrimony consists of over 100 species (1300 exemplars) aquatic creatures and is structured into several sections. The distribution of aquatic organisms into sections is based on ecological and bio-geographical criteria, and within the sections the taxonomic criteria was taken into account for placing the different species into the tanks. Open hours:9AM-8PM.Entrance fee: 20lei (~5euros) for adults; 10lei (~2euros) for students. Children under 5 free. *The Planetarium A world beyond us, made up of stars, planets, galaxies and other things are disclosed to you, but you are assisted to learn how to travel among them using the constellations, the “Sky” that needed no renovation in the last 2000 years contributing to the realization of this picture. Shows hours: 10AM, 11:30AM, 1:30PM, 3:30PM, 5PM, 6PM and 7:30PM. *The Exotic Birds ExhibitionOn a 100 sqm covered surface, in large bird houses, with adequate compartments for food, nesting, flying and rest, one can admire the representatives of different bird species from Asia, Africa,Australia, New Guinea and South America. *The Micro DeltaThe patrimony of this objective has the aquatic avifauna (pelicans, swans, ducks and wild geese), the terrestrial avifauna (peacocks, pheasants) and mammals (mouflons, fallow deer, harts), that can be found in the Danube Delta’s Biosphere Reservation and the Negureni Reservation. Most part of these exemplars are natural monuments and rare species with a scarce representation in the natural biotopes.Some exemplars were obtained by exchange with the other Zoo Gardens and others were purchased or donated.
You can do sunbathing or you can swim in the Black Sea. There is a large beach called Modern right in the middle of the city, which is favored by locals and is near the marina. Very very shallow waters (you can walk for 20-30 meters and the water won't pass your knees) so it's suited if you want to take your kids there and let them play safely in the water. The most significant beaches are in the Mamaia resort which is in the north part of Constanta. It consists of about 6-7 kilometers of sandy beaches with absolutely no rocks; the width of the beaches vary from 20 to 150 meters. It's also full of hotels, clubs and bars and extremely popular and fashionable in the summer. Moreover in the off season (September-April) they are a great place for taking pictures walks, or rides with the atv or enduro motorcycle and there are some centers for renting atv-s near the Cleopatra bar at the beginning of the resort. If you arrive by car not registered in the county of Constanta from May/June to September expect to pay an entrance fee of 3 Lei (1 dollar or 0,7 euros) at the entrance ticket booth for your car, although in 2006 the tax was off. The ratio of free parking/paid parking is around 25%/75% and the parking lots with the fee are guarded and not that expensive (3 Lei per hour) and a good alternative especially if you are on a motorcycle because people will climb your bike to take pictures on it. The paid parking places are marked with a white P on a blue background. The unpaid parking lots are on the sides of the main boulevard.
You can stroll the city's streets, the historical peninsular area which has a special charm, the sea coast, the Tomis marina or one of the many parks, on the lake-side or through the ruins of the ancient Greek colony Tomis.
You can shop downtown, on the Ştefan cel Mare street where most big shopping centers are situated, including Tomis Mall (http://www.tomis.ro/), but also in the new, modern and bigger City Park Mall (http://www.city-park.ro/) - in Tabacarie Park. Another shopping center is TOM (Carrefour).
Cityplex (in Tomis Mall), Str. Ştefan cel Mare, Nr. 36-40, Tel. +40-241-483-183, http://www.cityplex-tomis.ro/; Cinema Sudio
Bars and clubs
There are many bars and clubs open in Constanta. However, some of them are closed during the summer, as Mamaia resort opens. You can go to: Phoenix (a rock club, http://www.club-phoenix.ro/), Domino, Mindfluid (http://www.mindfluid.ro/), Doors (http://www.doorsclub.ro/),...
Teatrul Naţional Constanţa, B-dul Ferdinand, Nr.11, Tel. +40-241-488-612 Teatrul de Opera si Balet Oleg Danovski, Str. Mircea cel Batran, Nr. 97, Tel. +40-241-480-300; Web -  Elpis, Str. Alexandru Karatzali, Nr. 16, Tel. +40-241-618-992
You can get aboard a tour boat from the Tomis marina which will take you on a trip to the open seas and back.
You can do your shopping at one of the following shopping centers:
A typical meal at a restaurant is around 8-10 euro per person including drinks. Waiters usually know some English and menus are usually written in English. International cuisine is present, you should try the wines which are very good and not that expensive.
You will find a lot of fast food places selling kebab and shawarma (a nice mixture of grilled chicken, salads, french fries and sauces wrapped in a lipia (a sort of thin pancake used as a substitute for bread by Turks), very good and not that expensive (around 7 lei <1.8 euro> for a small one and 10 lei for a big one).
There are many bars in the city especially during summer-time.
Some hotels in Mamaia are open in the winter and you can get very good deals on accommodation in the off season.
Private Accommodation and Services
Constanţa is a pretty safe city even by European standards, but as a precaution avoid taking taxis near the train station and insist that they turn the meter on. If you visit the historical peninsular area at night, try to do this in a group. Unlike some other cities in Romania, people from Constanţa are well used to foreigners and are generally helpful. Walking at night is okay even alone, though you should avoid walking with your camera around your neck and be mindful of pick pockets when using public transportation. Your religion is not of concern since a lot of locals come from very different ethnic and religious backgrounds, but refrain from commenting on religious matters. Unlike Western Europe or the Middle East, the local Muslim population is pretty secular and don't have a problem with western culture or habits.
Stay away from dodgy small casinos and avoid exchange offices especially those located in Mamaia. They have hidden commission (written with small letters) or separate exchange rates for travel checks and cash. Use only trusted exchange offices, like Balkan Exchange. If you are unsure go to a bank, Your best bet is to exchange money at banks, which are located throughout the city. Although banks don't have good exchange rates, they are still better than the rip-offs).
As with Bucharest and other big cities in Romania your biggest safety concern could come from feral dogs. If confronted by a group of barking dogs don't loose your cool and back away since they are usually territorial and won't chase you. If they get too close, pretend you are picking a rock from the ground. Whatever you do, don't run.
Women will not be permitted access in churches or mosques if they wear short skirts.
to the south there are a string of summer resorts, Eforie Nord/sud, Costinesti, Neptun, Olimp. Neptun is recommended because it has a more relaxed atmosphere and for its lush forests that end near the sea. During the last NATO summit president Bush visited the resort for talks with President Basescu