Strange red rock formations that have been attributed to a higher power for hundreds of years.

Ancient human remains unearthed around the iconic monument.

Famously misunderstood wonder of the ancient world

This restaurant's specialty is "a major enigma for food historians."

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

This ancient Egyptian obelisk still bears the wounds of World War I.

Dozens of snakes are housed and worshipped within the walls of this Vodun temple.

A monument to the more than one million enslaved Africans deported from the port of Ouidah.

Africa's Venice on stilts.

One of the world's largest collections of pathological specimens.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

The Art Deco artwork depicts gilded carriers of deadly illnesses.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

Black cat statues guard this temple-like Egyptian revival factory.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

An small and easily overlooked archaeology museum chock full of Egyptian artifacts.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

A cluttered and astounding collection of antiquities and curiosities.

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

The video game-themed street art first popped up in the French city.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

A surrealist timepiece by the artist of melting clocks.