Sulphuric gases inhabit a beautiful Japanese island.

This South London cemetery holds the remains of more than 15,000 people.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

On Japan's Tashirojima Island, cats are king.

Site of the world's largest nuclear explosion.

Site of the largest impact event to occur over land in Earth's recorded history.

Former prison camp dedicated to the victims of political repression.

Museum celebrating the achievements of the Soviet space program.

Secret Soviet city once home to Russian cosmonauts and space training facilities.

Immortal combat in a Moscow museum.

Structure built from the skulls of vanquished foes.

Hungarian mummies in beautiful painted coffins.