Places around the world that are off-limits to the public

One of the most unexplored places on the Earth, Heard Island lies between Antarctica and Madagascar. Politically, this island is a part of Australia. There are two active volcanoes on the Heard Island, and it is completely barren. The entire island is composed of debris and limestone that took place as a result of volcanic eruptions. To preserve the fragile natural surroundings, the Australian Government restricted entry to the forbidden island.