British Indian Ocean Territory Travel Guide & Community

British Indian Ocean Territory is a travel destination in Eastern Africa. Its capital is Diego Garcia. August and July are its two best months to visit, ranked on 1991–2020 climate averages.

Top places to visit in British Indian Ocean Territory

• Diego Garcia Atoll (landmark) — The largest atoll in the Chagos Archipelago — a horseshoe-shaped coral island enclosing a vast lagoon; hosts the joint UK–US military base and airfield that has played a strategic role in Indian Ocean operations since the 1970s; the surrounding reef system is among the healthiest in the world.
• Great Chagos Bank (natural) — World's largest coral atoll structure by area — a vast submerged and partially-emergent bank extending over 12,000 km²; supports extraordinary marine biodiversity including huge schools of surgeonfish, reef sharks, and nesting green turtles across pristine, largely undisturbed reef habitat.
• Peros Banhos Atoll (natural) — A remote northern atoll in the Chagos Archipelago with over 30 islets enclosing a turquoise lagoon — abandoned since the depopulation of the 1970s, the former village sites are being reclaimed by coconut palms; the reef and lagoon now form part of the world's largest no-take marine reserve.
• Salomon Islands Atoll (natural) — Tight cluster of wooded islets around a sheltered lagoon in the north of Chagos — once home to Chagossian communities, now a wildlife sanctuary; visiting yachts under permit anchor in the crystal lagoon near the ruins of the old copra plantation, surrounded by nesting red-footed boobies.
• Chagos Marine Protected Area (natural) — Proclaimed in 2010, the world's largest no-take marine reserve at 640,000 km² — protecting the exceptionally pristine reef ecosystems of the Chagos Archipelago from all extractive activities; coral cover and fish biomass are among the highest recorded anywhere in the Indian Ocean.
• Egmont Islands (natural) — Southernmost atoll in the Chagos group, composed of six low-lying islets around a shallow lagoon — important nesting ground for hawksbill and green sea turtles; the surrounding reef supports rare species of coral, humphead wrasse, and giant grouper absent from more disturbed reefs.
• Eagle Island (natural) — Small island at the heart of Diego Garcia atoll — the location includes wetland habitat used by migratory shorebirds; the adjacent shallow reef flat hosts extensive seagrass beds used by green turtles for foraging, one of the few seagrass-rich habitats remaining in the central Indian Ocean.
• Three Brothers Islands (natural) — Three tiny flat islets rising barely above sea level in the central Chagos — important seabird nesting colony for brown noddies, sooty terns, and red-tailed tropicbirds; the surrounding outer reef slope shelves into deep blue water renowned for large pelagic fish including yellowfin tuna.
• Danger Island Lagoon (natural) — A coral lagoon off a small Chagos islet renowned for exceptional visibility — the calm enclosed water allows snorkellers to observe dense schools of bumphead parrotfish grazing on the reef at dawn; the pristine fringing reef is unchanged by the tourism pressures that affect most Indian Ocean reef systems.
• Nelsons Island (natural) — Remote islet in the Chagos group, uninhabited and barely vegetated — the exposed reef crest is a critical resting site for migratory seabirds crossing the Indian Ocean; the extensive shallow reef platform around the island bleached and recovered after the 1998 El Niño, demonstrating the resilience of these protected reefs.