Not far from the centre of Rome, Ostia is a residential area, the capital's beach and a well-known "tourist port" with moorings for boats from 8-60 metres (26-197 ft) in length. It also contains many Roman ruins, dating back to the days when Ostia served as Rome's port (a function now taken over by Civitavecchia). Ostia Antica is one of Lazio's major attractions, less crowded and, for some, more enjoyable than the ruins of Pompeii. So if you can't make it down to Pompeii, don't worry: just head out to Ostia antica.
Italy might be a Catholic country, but you won't detect any religious conservatism in the skimpy bikinis on display here. There's a carnival atmosphere with dance halls, cinemas, and pizzerias. The Lido is set off best at Castelporziano, against a backdrop of pinewoods which provide the summer residence of the President of Italy. This stretch of shoreline is referred to as the Roman Riviera.
If you're flying out of Fiumicino, this town is a good stopover for the night before. You can return your rental car if need be, and catch a cab for a few minute, few kilometer ride to the airport, and forget about the trains and the traffic from Rome.
If you want to see both ancient and modern Rome, grab your swimsuit, towel and sunblock, and take the Roma-Lido railway from the Roma Porta S. Paolo train station (which is located right next to the "Piramide" Metro stop of line B); ordinary ATAC tickets and passes are valid on this light railway. Departures are about every 15 minutes (30 minutes during Sunday and public holidays), while the trip takes about 40 minutes. The train lets you off across one of the highways that connects Rome with the coast: from there, it's just a short walk to Ostia antica. Later, you can board the train again to visit Ostia and its beach.
There's also the #070 bus, departing from the "EUR Fermi" Metro stop of line B, which goes to the beach at Castelporziano.
From Fiumicino airport, you can take the regional (COTRAL) bus departing from Terminal 2 heading to Ostia's central train station ("Stazione di Lido di Ostia Centrale"); departures are about every 40 minutes, while the trip takes about 30 min.
Beaches at Ostia are crowded during the summer months and are full of deck chairs and sunbeds that you have to rent. If you like a bit more space and a chance to sit on the sand without paying for the privilege you can take the bus #07 from the Roma-Lido "Cristoforo Colombo" train stop or hire a bike with a specialised company in order to tour this area. Heading south towards Torvaianica, after a couple of miles of beach and dunes that are closed to the public, you come to a public beach - the dunes of Castelporziano. Taking a bus or bike is highly recommended, because there is no sidewalk, only a road with barbed wire fences on both sides. Near the beach there are some good restaurants, toilets and showers. All the area is a natural reserve and hosts the biggest pinewood in Rome (if you get lost, ask for the "Cancelli" - everybody knows this area under this name). The wood, however, is surrounded by a fence and not accessible by public. Only a part of the beach is open.
Arriving from Rome, get off at Ostia Antica station, a couple of miles from the beach area.  From 08:30. Closing time varies according to the season. Closed M. €8.00, maps €2.
Originally a colony of Rome, Ostia grew to become the major port of the city. It was situated on the mouth of the Tiber, the word Ostia meaning mouth. The town's growth started in the late Republic, but expanded rapidly under the Emperors Claudius and Trajan. The town was deserted after Rome's fall in 476 AD, and the buildings fell into ruins which were in turn covered by sand and mud from the Tiber, preserving them. The ancient town remained farmland until excavations took place in the late 19th and early 20th centuries, and now most of the old town is uncovered, giving the visitor an idea of what life was like in an Ancient Roman commercial town during the height of the Empire. The ruins are similar to those in Pompeii, but there are no wealthy houses in Ostia. Note that the archaeological site is vast, with plenty to see to occupy a full day. You will need to wear good footwear.
In Ostia Antica, you should buy a guide book from the ticket office when you enter. Without a guide book, you will see lumps of stone everywhere. With a guide book, you will understand what buildings stood where those lumps of stone now lie. On your tour look out for:
The Forum, with its Capitol. The Temple's podium is still in place, as are the walls of the cellar where the cult statues were kept. You get an appreciation of how huge Roman temples were.
The Piazza of the Corporations, behind the theatre, preserves the offices of trade guilds or merchants from various parts of the world, each office identified by its mosiac floor.
Ostia is famous for the ancient apartment buildings that are very well preserved. The town's population were poor dock workers living in large apartment buildings. These buildings can be explored to one storey in height, with narrow stairways and corridors leading to small rooms. There are also the remains of more wealthy houses, such as the House of Cupid and Psyche, with very rich marble decorations. You get a real feel for how these people lived 2,000 years ago.
The small museum contains the main finds from the excavations, ranging from cult statues to small bits of sculpture.
Near the arena
The ancient warehouses and docks. These are well preserved and look very much like those of the 19th century. The ancient kerbs and pavement is still in place as they are in Pompeii and Herculaneum.
Visit the two Baths with their beautiful and famous mosaic floors.
Ostia Castle. This is close to Ostia Antica, on the other side of the railway line and Via del Mare in the small village of Ostia Antica. It was built in 1483 by Giuliano della Rovere, who later became Pope Julius II. Much of the building material consisted of bricks pilfered from Ostia Antica.
Pinewood of Castelfusano, easily accessible from the stations of Cristoforo Colombo or Castelfusano, and the suburb of Infernetto
Portus. Although Rome's original harbour was at Ostia Antica, around AD 46 the Emperor Claudius constructed a new harbour north of Ostia with two long curving moles projecting into the sea. The harbour opened directly to the sea to the north-west protecting it from the prevaling south-west wind. It connected with the River Tiber by a channel on the south-east. The harbour was known as Portus and the Via Portuensis still connects Rome with the area. In 103 AD Trajan constructed another harbour farther inland, a hexagonal basin. The basin itself is now a reedy lagoon and remains of the many warehouses can still be seen. Like many points of archaeological interest in the area the port is unfortunately not open to the public without making an appointment. Details at ].
Porto turistico di Ostia. About 2km north-west of the center of Ostia. This is a modern development close to the old Roman port. It has berths for up to 794 boats, from 8-53 m in length. Shops catering to yachties, restaurants and bars. A popular place among Romans for a weekend stroll.
Ostia Antica. There is a modern, clean restaurant inside the site, next to the gift shop which stocks all kinds of items such as postcards, posters, books and souvenirs.
Ferrara, (just off the Lungomare near the pier). You know it's terrific because of the crowds all the time. They have all kinds of pizze and many side dishes, all cafeteria style at very reasonable prices, and very tasty.edit
Gelateria Salus, Lungomare Paolo Toscanelli, 117, ☎ +39 6 97613117. Very good ice cream (only at the table) in a particularly nice environment, prices are mid-range, but the ice cream and service are worth the price.edit
Ristorante Don Pepe, Lungomare Paolo Toscanelli 125. Tel. +39 6 5672408, . Italian and Spanish cooking: fish and meat.
Ristorante-Pizzeria Blue Fin, Lungomare Paolo Toscanelli 120, .
Zenzero Biorestaurant, Viale della Pineta di Ostia 30, ☎ +39 6 562 12 93 (firstname.lastname@example.org), . Serves vegetarian food and fish. Very tasty food combined with a nice atmosphere.edit
MED Restaurant, Lungomare Caio Duilio, 40, ☎ +39 65 6471080, . Inventive Mediterranean cuisine, focus on fresh seafood, pastas, and risottos. Great wine list and cocktails. Welcoming atmosphere. By day, a pleasant beach with a cafe, lounge chairs, and umbrellas.edit
Ristorante Eat And Go, Viale della Marina, 57, ☎ +39 06 562 1955. Delicious Italian food that includes meat, fish, pizzas etc. Good & quick service, helpful & kind personnel.edit
Hotel Ping-Pong, Lungomare Paolo Toscanelli 84 (just down from the pier), ☎ +39 6 5601733. Convenient, reasonable, friendly staff. Fax number is same phone numberedit
Litus Roma Hostel, Lungomare Toscanelli 186, . The first hostel by the sea in Rome. Located near the new port of Rome and close to the excavations of Ostia Antica. It's easily reachable from the center of Rome by public transportation. Over 140 beds in comfortable rooms with ensuite bathrooms, TV, sea views, free daily maid service, and laundry services. €24-38.
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