The Most Isolated Place on Earth: Tristan da Cunha Looking for a getaway from the everyday? Forget these popular island getaways; this is about as far away from it as you can get. Though formally part of the British Overseas Territory, Tristan da Cunha is over 2,816 kilometres away from the nearest land in Africa. Discovered by Portuguese explorer Tristão da Cunha in 1506, the island is home to fewer than 300 inhabitants and has no airport; Tristan da Cunha is accessible only by sea.