The oldest cemetery of modern-day Athens blends the modern and ancient worlds.

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

The space-age building is home to one of the few remaining rotating restaurants in America, and the only one that inspired a 1980s sitcom.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

The first high-tech company in the valley that actually worked with silicon devices.

One of the most well-preserved temples of ancient Egypt.

A unique tribute to the millions of animals who served and died for the British military.

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

Outposts of this restaurant chain were shaped like jaunty chapeaus.

A historic hill of tall tales, with one rather special tree.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

What looks like a normal building is really a hollow facade hiding a subway vent.

Though strikingly beautiful, Seattle's other railway station is now largely forgotten.

Every birth, death, and marriage is recorded in these color-coded leather-bound books.

This ruined medieval castle was the scene of Lord Robert Dudley’s seductive reception for Queen Elizabeth I.

Amsterdam's former hotspot for public executions and dissections.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

Where Venice's gondolas go for a tune-up.

Two stone columns flank the grand Venice square, but there were supposed to be three.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

An extensive collection of reliquaries containing the bones of saints housed in the largest Catholic church in Venice.

A sinister pyramid in the Frari contains the heart of the famous neoclassical sculptor.