Port Lockroy | Antarctica’s Penguin Post Office

Even though there are a few historic outposts in Antarctica, not many have played an active role over multiple historical eras. Port Lockroy is one of the unique bases that serves as a link between the heroic era of Antarctic exploration and the modern-day Antarctic research bases.

Port Lockroy’s role in polar history and science

Between 1911 and 1931, Port Lockroy served as a commercial whaling base in the Antarctic Peninsula. It was used for the anchorage of multiple floating factory ships for offshore whale processing. After the whaling era, during World War II, the British set up their Base A at Goudier Island as part of Operation Tabarin—a top-secret expedition launched in 1943—marking the port’s first permanent occupation. 

When the war ended, the military objectives of the station shifted to scientific observations. The research conducted here included observation of the atmosphere, specifically the ionosphere, and meteorological studies. The station was left defunct in 1962 when more modern research stations were set up.

In 1995, the base was designated as the Historic Site and Monument no. 61 and the buildings were renovated. Three buildings are being preserved, and the main building is a museum developed by the UK Antarctic Heritage Trust (UKAHT). The UKAHT continues to monitor the impact of visitors on the island and also gathers data on the number of penguins present here.

How to get to Port Lockroy

Access to Goudier Island is limited to the summer months when the weather remains relatively calm. The ice-laden waters of the bay are best accessed by ice-strengthened cruise ships. Since the terrain and the landing point are rocky, zodiac landing can be tricky and may not be possible if the weather becomes uncertain. 

The low-lying, rocky island is a popular stopping point for expedition vessels visiting the Antarctic Peninsula because of its wildlife and historical importance.

Since the Port offers a combination of spectacular mountain scenery, wildlife and history, it has something for everyone. The main building, Bransfield House, was made from pre-fabricated timber and still survives. Only a limited number of visitors are allowed inside the main building at one time. So, you may find a line outside it during the summer visitor season.

Gentoo penguins and other wildlife near Port Lockroy

The gentoo penguin colony on Goudier Island has around 1,000 penguins. The number, though small on an Antarctic scale, is significant considering the small size of the Island. 

The nest-building activity starts in early November, and it is great fun to watch the penguins work on their nests with pebbles and feathers. Often, there are fights among the birds when one attempts to steal a pebble from a neighbour’s nest. In mid-summer, the charming baby penguins are a prime attraction for explorers.

Apart from the gentoos, Adelie and chinstrap penguins visit the Port occasionally. Other birds that can be spotted on the bay include the Arctic tern, snowy sheathbill, Antarctic shag, brown skua, Wilson’s storm petrel, and kelp gull. Fur and Weddell seals are not common on the island and remain infrequent visitors.

To ensure the preservation of the environment and not to disrupt penguin breeding patterns, only 350 visitors are allowed on Port Lockroy per day. The eastern part of the island is a declared undisturbed area and out of bounds for visitors. While visitors must maintain a minimum 5-metre distance from any wildlife, gentoo penguins are inquisitive by nature. It is not unusual for a few birds to come running if some human action piques their interest.

Photography at Port Lockroy

With its blend of icy scenery, historic buildings, and a bustling gentoo colony, Port Lockroy is a visual highlight of any Antarctic voyage. Whether you're photographing penguins, the Union Jack atop Bransfield House, or dramatic mountain backdrops, there’s no shortage of subjects — just unpredictable conditions.

• For expert advice, check out our guides on landscape photography and wildlife photography in polar regions

What to expect at Port Lockroy: museum, post office & souvenirs

Bransfield House is the heart of the historic site — a restored building from Operation Tabarin that now houses a museum maintained by the UK Antarctic Heritage Trust. Inside, you’ll find artefacts from the whaling and scientific eras that offer a rare glimpse into life in Antarctica over the past century.

Next to the museum, you’ll find the southernmost public post office in the world, fondly known as the Penguin Post Office. Each summer, staff process more than 80,000 postcards and letters, mailed by visitors to friends and family around the globe. There’s also a small souvenir shop with books, pins, and other keepsakes — all proceeds help support the site’s conservation.

Why Port Lockroy still matters today

Today, Port Lockroy stands as a rare intersection of history, science, wildlife, and human connection in Antarctica. Whether you're sending a postcard from the Penguin Post Office or watching penguins waddle past Bransfield House, it offers a chance to step briefly into the past — and to reflect on the delicate balance of preserving this icy world for the future.