Ruppert Coast, Antarctica

This quasi-unexplored coast along Marie Byrd Land is one of the only territories in the world to have never been claimed by any country, making it a terra nullius. It was the American colonel Jacob Ruppert who made the first aerial reconnaissance flight along this coast, during the second Byrd Antarctic Expedition (1933-1935). A Soviet research station was established there in 1980, before being officially abandoned in 1990.