5,000 skulls in memorial to those killed by the Khmer Rouge.

340-foot statue built to honour the Heroes of the Soviet Union.

A unique museum dedicated to culture and artistry of carpet weaving.

This mysterious but iconic tapered tower appears in many Azeri fairytales and legends.

A large collection of steam engines, organs, and fairground attractions.

This medieval castle is filled with an eccentric collection that ranges from ancient Egyptian artifacts to taxidermy to a mummified hand that was cut off during a duel.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Eighty million natural history specimens call this gargantuan museum home.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.