One of the newest mosques in a city filled with thousands.

A surprising and unconventional mosque hidden in the subsoil of Istanbul.

An intriguing three-sided folly is a testament to one man's devotion to Catholicism and the number three.

The intended purpose of this unfinished Elizabethan building remains a mystery.

Eight naturally mummified bodies in glass coffins are housed in an underground crypt.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

The bones of some 7,000 soldiers killed in the historic Battle of Solferino are stored here.

A 1,000-year-old church holds the bones of the Christian martyrs who died hiding inside it.

Under a church hides a forgotten 13th-century ossuary containing the remains of around 2,500 people.

An abandoned 18th century manse looks like something out of an Indiana Jones movie.

An engraved stone in a village church claims to be the grave of a minuscule folk legend.

A working farm turned into a museum dedicated to the world's most unbelievably tiny cars.

Isaac Newton's former home, where the famous apple tree still stands.

The sanctuary seems to either float atop the water or sink into the dirt, depending on the water level.

England’s ancient oak tree has such an impressive girth, people have been hosting parties within the hollow trunk for centuries.