Peter I Island

Claimed as a Norwegian dependency in 1931 and protected as a nature reserve, Peter I Island was first sighted in 1821 by the Russian explorer Fabian von Bellingshausen, but because of its extreme isolation out in the Bellingshausen Sea and the near-permanent fog and sea ice around it, nobody managed to land on it until more than a century later, in 1929, on a Norwegian expedition. It remains one of the least visited and least studied islands on the planet, with barely a handful of documented scientific expeditions in its entire history.