Antarctica is a land of extremes: it is the coldest and driest continent on Earth and has the highest average elevation. As the fifth largest continent in the world, Antartica is also the most Southern, overlying the "South Pole". Scarcely touched by humans, the frozen land boasts breathtaking scenery, broken by only a handful of scientific bases and a "permanent" population of scientists numbering only a few thousand. Visitors to Antarctica generally must brave rough sea crossings aboard ice-strengthened vessels, but those who do are rewarded with amazing scenery and tremendous and unique wildlife.
Although several countries have laid claim to various portions of Antarctica, it is governed by the 1958 Antarctic Treaty, which establishes the continent as a peaceful and cooperative international research zone. There are no cities per se, just some two dozen research stations with a total population ranging from 1000-4000 depending on the time of year. These are maintained for scientific purposes only, and do not provide any official support for tourism. The laws of the nation operating each research station apply there.
Private travel to Antarctica generally takes one of three forms: 1) commercial sea voyages with shore visits (by far the most popular), 2) specially mounted land expeditions, or 3) sightseeing by air. Approximately 80 companies belong to the International Association of Antarctica Tour Operators , a membership organization which regulates non-research travel to the region. In the 2005-2006 summer season, an estimated 26,250 people visited Antarctica or the surrounding waters.
Flora and fauna
Antarctica is notable for being the only continent with no significant land plant life and no native land mammals, reptiles, or amphibians. (There are no polar bears; they are only at the North Pole.) However its shoreline serves as nesting ground for many species of migratory birds and penguins, and the Southern Ocean surrounding it is home to many fish and marine mammals, including whales.
Don't be fooled by all the ice: Antarctica is a desert. The region's moisture is all tied up in frigid seawater and the huge sheets, shelves, and packs of ice which cover nearly all of the continent plus surrounding waters. There is little snowfall here, and even less rain.
For tourists, Antarctica is accessible only during the austral summer season from November to March, during which sea ice melts enough to allow access, coastal temperatures can rise up to highs of 14°C (57°F) and there are twenty four hours of daylight. During the winter the sea is impassable. Temperatures can fall to -40°C/F and there are twenty four hours of darkness.
The above temperatures apply to the islands and coastal regions that tourists ordinarily visit. Temperatures in the interior, such as the South Pole, are far harsher, with summer highs of around -15°C (5°F) and winter lows plummeting to -80°C (-112°F).
For most people, reading about Antarctica is the only affordable means of experiencing the continent. Books range from wild works of fiction to non-fiction accounts of the extraordinary early missions of adventurers looking to conquer Earth's last land frontier.
Note: All dots on map represent inhabited research stations.
Also see Islands of the Southern Ocean
The primary destinations for those visiting Antarctica will either be a research base (for those working on the frozen continent) or the Antarctic Peninsula or Ross Sea area (for those visiting by ship). Other destinations are reachable only by those blessed with extreme motivation and (most importantly) funding.
The native languages of the nations operating bases are used. English is the lingua franca used between different stations.
Aircraft and pilots need to be capable of landing on ice, snow, or gravel runways, as there are no paved runways.There are 28 airport landing facilities in Antarctica and all 37 Antarctic stations have helipads. Landings are generally restricted to the daylight season (Summer months from October to March). Winter landings have been performed at Williams Field but low temperatures mean that aircraft cannot stay on the ice longer than an hour or so as their skis may freeze to the ice runway. Travel is often by military aircraft, as part of the cargo. In this situation passengers should anticipate carrying all their own luggage and may need to assist with freight as well. Commercial flights to Antarctica are rare, but available. Aerovías DAP and Adventure Network International offer commercial flights to Frei Station on King George Island and the ANI Union Glacier Camp, respectively. If taking the Aerovías DAP flight as part of a tour with Antarctica XXI, the tour company transfers all checked luggage to your lodging.
Major landing fields include:
Commercial overflights to Antarctica are limited - a handful of operators offer flights from Sydney, Melbourne, and Punta Arenas. These flights typically visit Antarctica and spend several hours flying over the ice. Passengers in most seating classes rotate their position in the row halfway into the flight, to give everyone a window or one-over-from-window seat for half of the time. Rates range from $5199 for first class, to $1399 for partially-obstructed-view economy class, or $899 for non-rotating center-section seats with window access depending on the courtesy of better-seated travelers.
By cruise ship
Boat is the most common method of visiting the Antarctic. In the Antarctic summer, several companies offer excursions on ice strengthened vessels to Antarctica. Ice strengthened (not quite as tough as icebreakers) boats are preferred since icebreakers are round on the bottom -- a configuration that amplifies the already massive wave action in the Drake passage. The ships typically offer a couple of excursions to the continent (usually the Antarctic peninsula) or Antarctic islands (e.g., Deception Island, Aitcho Island) each day over the course of a week. The views are phenomenal, the penguins are friendly (well, some of them are), and the experience is one that is unparalleled!
When traveling by boat, be aware that smaller ships (typically carrying 50-100 passengers) can go where the big ships can't, getting you up closer to Antarctica's nature and wildlife. Larger vessels (carrying as many as 1200 people) are less prone to rough seas but have more limited landing options. Many vessels include naturalist guided hikes, zodiac excursions and sea kayaking right from the ship, perfect for active, casual travelers.
You'll need warm clothing: boots, hoods, glove, water repellent pants, parka and warm underwear. Most of these items can be bought or hired in Ushuaia, but sometimes - in the high season - it is not always easy to get the right sizes. So bring whatever you can from your own stock.
It must also be remembered that cruise operators typically only allow 100 people on land at any one time in order to comply with IAATO agreements. Consequently if you are in a boat with more than 200 people the chances are you will only spend a couple of hours at most per day off ship. Generally the smaller ships will try to ensure 2 different locations per day around Antarctica, although this is of course dependent on the weather and you may expect a 60% success rate on landing people for any given visit.
Many shipping companies are now offering Fly/Cruise options, which entails a one-way or round-trip flight from either Santiago or Punta Arenas to King George Island. These are often pricier than typically cruises that cross the Drake Passage both ways, but cut 1-3 days off the total travel time.
Companies offering cruises to Antarctica include:
Most cruise ships depart from the following ports:
About a dozen charter sailboats, many of them members of IAATO, offer three to six week voyages to the Antarctic Peninsula from South America. Most offer "expedition style" trips where guests are invited to help out, although usually no prior sailing experience is required. Yachts take individuals on a "by the bunk" basis and also support private expeditions such as scientific research, mountaineering, kayaking, and film-making. Compared to the more popular cruise ships, a small yacht can be more work and significantly less comfortable, but typically allows more freedom and flexibility. For the right people this can be a far more rewarding experience.
Coastal stations include
Ponies, sledges and dogs, skis, tractors, snow cats (and similar tracked vehicles) and aircraft including helicopters and ski planes have all been used to get around Antarctica. Cruise ships use zodiac boats to ferry tourists from ship to shore in small groups. Bring your own fuel and food, or arrange supplies in advance. You cannot purchase fuel or food on the continent. Cruise ships come fully prepared with landing transport, food, etc. Some (but not all) even provide cold-weather clothing.
Antarctica has 24-hour sunshine during the southern hemisphere summer. Visitors should ensure that they take steps to keep regular sleeping hours as continuous daylight disturbs the body clock. There are no hotels or lodges on the continent, and research bases will not generally house guests. Most visitors sleep aboard their boat, although land expeditions will use tents for shelter.
It is possible to obtain employment with scientific expeditions in Antarctica. Induction and training need to be undertaken prior to departure for Antarctica.
The following agencies are responsible for staffing bases in Antarctica:
Antarctica is an extreme environment, and accidents are unavoidable. Every year numerous people are injured or even killed visiting the Antarctic, and while this should not dissuade people from visiting, it should encourage visitors to exercise caution and make a realistic evaluation of their own abilities when choosing a trip.
As most visitors to Antarctica will arrive by boat, the greatest dangers occur due to storms at sea. The weather in the Southern Ocean is nature at its most extreme, with the potential for hurricane force winds and waves as high as 60-70 feet (18-23 meters). With modern safety and ship design the odds of sinking are low, but the odds of being thrown about by a wave are high. When on a boat in rough weather always make sure that you have at least one secure handhold, and avoid opening doors during storms as a sudden shift in the waves can easily bring a heavy door crashing back onto a body part. In severe weather stay in your cabin and wait for the storm to subside. Similarly, be extremely cautious when returning to ship via a zodiac and follow crew instructions - a landing platform in rough weather can be deadly should you slip and fall.
Weather on the continent is equally extreme, although most visitors pack appropriate gear. For expeditions there are limited search-and-rescue options, so expeditions must plan for all contingencies. There is no formal government or legal system in Antarctica, but the laws of the country of origin or departure as well as those of a claimant government may apply. Rules regarding protection of the environment and of historical sites will be strictly enforced, and fines can be extreme.
Also note that when visiting Antarctica that a hospital is usually days away. Most ships and research stations have a doctor, but facilities are limited. In cases where evacuation is required (if even possible), costs can run into the tens of thousands of dollars. Those with pre-existing conditions should strongly consider the risks of venturing into a land where medical help may not be available prior to embarking on an Antarctic journey.
Antarctica has an extreme environment. The cold is a major health hazard. In the Northern Hemisphere, several homeless people die from hypothermia every winter. Visitors should be properly prepared and equipped for any visit. Waterproof and windproof gloves, coat, pants, and boots are an absolute necessity. Other necessities that are often overlooked include sunscreen and sunglasses - summertime visitors will be exposed to the sun's rays from above and from reflections off of snow, ice, and water. Additionally, for those arriving by boat seasickness medicine is strongly encouraged - even the most seaworthy individual will feel queasy in a severe storm; check with your doctor before visiting to determine what medicine is appropriate.
Antarctica has a very fragile environment. Pollution should be avoided if at all possible. Expeditions should anticipate the need to remove all waste from the continent when they leave. Waste disposal and sewage facilities on the continent are severely limited and restricted to permanent installations. Of particular concern to tourists is the danger of introducing foreign organisms into the fragile Antarctic environment. Many tour operators will require visitors to do a boot wash after every landing to avoid carrying seeds or other items from one location to another. In addition, visitors should examine all clothing prior to embarking to avoid bringing any plant or animal material to the Antarctic; invasive species have devastated many regions of the planet, so it is particularly important to protect Antarctica from this danger.
The International Association of Antarctica Tour Operators (IAATO) is a voluntary organization of tour operators which promotes safe and environmentally responsible tourism in Antarctica. It publishes standards for member tour operators on responsible practices for private visitors to Antarctica. 
The top-level Internet domain for Antarctic sites is .aq.