The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

This ancient theater was once the home of fierce gladiatorial battles.

Hear the quietest sound from across the dome.

This bridge was constructed from the rubble of the infamous Bastille.

An ongoing medieval tradition of communal pig husbandry is honored with a handsome granite sculpture.

Historic medieval fortified city in southwest France.

Even France's favorite aquatic son Jacques Cousteau, couldn't get to the bottom of it.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A unique seaside cave where Aleister Crowley faked his own death.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Catacombs turned marketplace.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

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

A sculpture park of the tossed aside relics of the USSR, from Stalin to a massive Soviet emblem.

Moscow's imposing monument to the Space Age.

Moscow's most popular cemetery includes the graves of numerous cosmonauts.

Museum celebrating the achievements of the Soviet space program.

A strangely forgotten claimant to the much contested title of "Source of the Nile."

An encyclopedic collection of mammal penises.