A pink sandstone column once used in ancient times to measure one's belly after a night of debauchery.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

The tabby ruin is Savannah’s oldest surviving structure.

The only example of a Paris Métro sign in use at a subway station outside of the French capital. 

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

The remains of this 2nd-century Roman temple are incorporated into a modern building.

This is the oldest Roman-made bridge in the city still existing in its original state.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

This clifftop arch is a natural stunner.

The sacristy of this church contains remains and relics of members of the Aragonese royal family.

These "anatomical machines" are only one of the many strange items in this Italian crypt.

Does this church in Naples hold the true tomb of Vlad the Impaler, the notoriously cruel figure who inspired Bram Stoker's Dracula?

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Macabre astrological automaton clock dating to the late 1400s.

A surreal statue honoring Prague's favorite literary son.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

Inside the Wayne County airport is an amazing collection of lights and sounds.

An unoccupied lighthouse encased in layers of ice from the waters of Lake Erie.

Scattered throughout London are ancient remnants of the city's former bounding wall.

An unusual round church in London with a Templar past.

Catacombs turned marketplace.