The cathedral exists because its predecessor did not survive. In 1886 a peat slip - a slow, suffocating slide of waterlogged ground - tore through part of Stanley and destroyed Holy Trinity Church, which had stood on this spot. The Falklanders rebuilt, and on 21 February 1892 Bishop Waite Stirling consecrated the new Christ Church Cathedral on Ross Road. It is a homely thing by cathedral standards: brick and local stone, a squat tower holding a ring of five bells, stained glass spanning the nineteenth and twentieth centuries, and a two-manual pipe organ that travelled all the way from Ireland to reach the bottom of the world. The scale is human, not heavenly - a building meant for a few thousand islanders rather than a great city, and all the more affecting for it.

The whalebone arch went up in 1933 to mark a hundred years of British rule in the Falklands. Its four great jawbones came from two blue whales, hauled south from the whaling stations of the sub-Antarctic and set on end to form a gateway taller than the people who pass beneath it. There is something fitting and something haunting in it at once: the Falklands and South Georgia were once a hub of an industry that hunted these animals to the brink of extinction, and the arch is a monument built quite literally from that history. Today blue whales are protected and slowly recovering, and the bleached arch stands as both a landmark and an unintended memorial - a reminder of just how vast the creatures of the Southern Ocean really are.

Step inside and the cathedral turns into a chronicle of the South Atlantic. On the south wall hangs a White Ensign flown by HMS Achilles at the Battle of the River Plate in December 1939, when Royal Navy cruisers cornered the German raider Graf Spee off the coast of Uruguay. The cathedral also holds the Garter banner of Lord Shackleton, son of the great Antarctic explorer, which once hung in St George's Chapel at Windsor Castle. The calendar here is stitched from the islands' battles. Services mark Liberation Day on 14 June, the day the Falklands War ended in 1982; Battle Day on 8 December, recalling a naval clash fought in these waters in 1914; and Remembrance Sunday each November. For a town this small, the cathedral carries an outsized weight of memory.