A small cell adjacent to this church was once the bedroom for a renowned saint.

According to local folklore, this Roman sepulcher was once a throne for the Devil.

This gallery commissioned by Cardinal Spada is known for its magnificent optical illusion.

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

Hundreds of personalized inscribed planks make up this historic boardwalk.

The highway's southernmost spot is a beloved local attraction.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Elevated freight railway turned wildly successful urban park.

This underwater sculpture park is the basis for a manmade coral reef.

This indoor ski resort has a mountain contained inside a mall.

This artificial archipelago was supposed to resemble a map of the world.

One of the two original gateways into the Kasbah, this gateway is a nesting site for storks.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

A tall karst islet popularized by 007.

Freddie Mercury's childhood home is now a monument to the iconic Queen rockstar.

Sitting atop a rock on Michamvi Pingwe beach, this restaurant becomes its own island at high tide.

An imperial fortress city that incorporated cultural elements from the entire Mughal empire, only to be abandoned the year it was finished.

A blooming house of worship for the masses.

A complex of six forts embedded in the Rajasthan hills.

The meaning behind this triumphal Roman arch was a mystery until the early 20th century.

Believed to be the remains of the lost Temple of Minerva, this nymphaeum has been known by its misnomer to this day.

A monumental fountain in Rome features a large statue of Moses that has been criticized for centuries.

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