Port Lockroy

Port Lockroy is a sheltered bay on the west side of Wiencke Island, off the Antarctic Peninsula, and the name travelers use for what stands on little Goudier Island inside it: Base A, a British station founded in 1944 and now a museum, shop and the "Penguin Post Office".¹²³ The UK Antarctic Heritage Trust (UKAHT), which runs it, calls the harbor Antarctica's most popular visitor destination.² By IAATO's count it is no longer the busiest single landing: Goudier Island had 102 landings in 2025-26, about half the 210 at Neko Harbour.⁴

Can you visit Port Lockroy?

Yes, but only from a ship that belongs to IAATO or a government program; the UK allows no others, and every visit needs the base leader's agreement.⁵ The Antarctic Treaty guidelines for Goudier Island, last revised in 2006, allow only 60 people ashore at a time. Jougla Point, the gentoo colony across the water, has its own rules:

Boats land on the west side beside the whalers' old mooring chains, or on the north side opposite the boatshed when that is blocked, and two maintained paths lead to the base.⁵ On a big ship the 60-person limit means landing in shifts, with a Zodiac cruise around the harbor while you wait your turn.⁷

What is there to see at Base A?

Three buildings, whaling relics and nesting gentoo penguins on a small, low, rocky island.⁵²

• Bransfield House, the main building, its core made of prefabricated timber from naval stores. It holds the museum, a time capsule of early polar science, and the post office with its small red Royal Mail post box.²⁸
• The New Generator Shed, now home to the shop.⁹
• The boatshed, built in 1957, and a modern copy of the 1944 Nissen hut, now staff housing.²
• Whaling remains, including the mooring chains; do not move or damage them. At the waterline grows Verrucaria serpuloides, which the guidelines call the only known marine lichen in the world.⁵

Whalers used the bay as a safe anchorage, which is why Britain chose it for Base A, established on February 11, 1944 as part of Operation Tabarin, a secret wartime mission to establish a permanent presence in Antarctica.² It ran as an atmospheric research station and radio hub until January 1962, became Historic Site and Monument No. 61 in 1995, and has been a museum since November 1996.² The bay is named after Édouard Lockroy, a French politician who helped finance the expedition that charted it on February 20, 1904.¹

What is open at Port Lockroy in 2026-27?

The museum, shop and post office, except the ionospheric room. UKAHT is in the second year of a three-year program to strengthen Bransfield House against heavier snow loads and rot; this season adds up to six roof beams and around 30 steel and timber props under the floor.¹⁰⁹ The ionospheric room, home of an ionosonde nicknamed the Beastie that weighs more than 1,100 lb (half a tonne), stays shut while the work goes on, though UKAHT's website has a virtual tour.⁹ Eight staff will spend five months on the island.¹⁰

How long do postcards from Port Lockroy take?

Usually six to eight weeks, which is what the base team tells guests. The record is about two weeks, and cards dropped in the box over winter wait months for the next team.⁸¹¹ Around 70,000 cards a year go to more than 100 countries.³

The route explains the wait. Staff hand-cancel every item with the Port Lockroy frank and, every couple of weeks, send full sacks north on a passing ship to Stanley in the Falkland Islands. There the mail is sorted by country and flown on one of the twice-weekly flights to RAF Brize Norton in England, and Royal Mail delivers it.¹¹¹² The postmaster's tip: post when the sacks look full, because they will soon be on a ship.¹¹

The counter also sells British Antarctic Territory stamps, first-day covers and sheetlets.¹¹ HX says the post office and shop take mainly US dollars and also accept pounds and euros.¹³ We found no published price for postcards or stamps. Proceeds pay for running Port Lockroy and other British historic sites in Antarctica.²

Will you see penguins at Port Lockroy?

Yes. Gentoo penguins nest all around the buildings, some within about 3 ft (1 m) of the post office door, and UKAHT puts the colony at more than 1,000 birds.⁷¹⁰ Snowy sheathbills, skuas and kelp gulls breed on the island too, and Weddell seals haul out.⁵ Across the harbor, a ground count at Jougla Point on December 14, 2025 found 1,515 gentoo nests, with blue-eyed shags and whale bones nearby.¹⁴⁶ Chick counts here run from early January into February.¹⁴ See our gentoo penguin page for the species.

The colony is also one of Antarctica's longest-running tests of tourism. Gentoos first bred on Goudier Island in 1985 and have been monitored since 1996-97.¹⁵ A 2019 study found breeding pairs fell 24.5% over 21 years while visitors rose from 262 to 19,688 a season; unvisited colonies declined too, and the authors linked the fall to warmer air and sea ice changes as well as visitor numbers.¹⁵ The COVID closures gave a cleaner test: with the post office shut, nests rose from 535 in 2018 to 978 in 2021, then fell to 529 in 2022 when it reopened.⁷ The 2006 site guidelines, which still report no discernible visitor impact on breeding success, predate both studies.⁵

Can weather or bird flu cancel a Port Lockroy landing?

Yes. Fast ice often surrounds the island early in the season, and each November the base team digs out the landing site, often a job of several days.⁵¹⁶ Bird flu precautions closed it in 2023: on December 5, IAATO stopped landings on Goudier Island because gentoos nesting close to Bransfield House made it impossible to keep 16 ft (5 m) away, and the staff took the shop and post office out to the ships instead.¹⁷ Landings by ships and yachts show that year, and the COVID closure that ended after 2021-22:⁴⁷

If a landing is called off, ask whether the team can come aboard: the postmaster says they offer to bring the shop and post office onto ships whose passengers cannot land.¹¹

Which cruises stop at Port Lockroy?

Many Peninsula voyages list it as a possible stop, never a promise. Among those we track:

• Oceanwide Expeditions names it on Hondius's Basecamp and Discovery and Learning departures and on March whale-watching trips aboard Hondius, Ortelius and Plancius.^1819242021 The cheapest is the 10-day Plancius trip from Ushuaia on March 26, 2027: $7,050 per person for one berth in a four-berth porthole cabin you share with strangers, read October 15, 2026, but only berths for women were left at that price; a man sharing a twin cabin paid $8,700. Airfare is extra.²²²¹
• Quark Expeditions puts the base among the possible excursions of Crossing the Circle, an Antarctic Express trip on Ocean Explorer that skips the Drake Passage crossing by flying guests to King George Island.²³ Its shorter Fly the Drake trip shows Port Lockroy only in a photo caption, not in its list of possible sites, so it is a weaker bet if the post office is the point.²⁵
• HX Expeditions says it sells cruises that include Port Lockroy, and the 2025-26 base team sailed south on its Fridtjof Nansen.¹³¹⁶

To weigh these trips against each other, see how to choose an Antarctica cruise.