The island of Lanai in Hawai'i is a paradise for cats and cat lovers.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

The first custom-designed building to showcase the works of Dale Chihuly is a wonderland of glass and light.

An enormous, inside-out glass globe built in 1935.

This towering statue of Jesus provided internet to the surrounding area.

A familiar otherworldly creature guards this 12th-century Scottish abbey.

There’s a hidden military meme engraved on the World War II Memorial.

The United States Capitol's former columns still stand.

An underwater city for the dead.

A huge musical instrument played by the ocean.

Mexico's largest collection of masks is found in the ruins of an abandoned convent.

The world’s largest collection of Tiffany glass sits in a warehouse in Queens.

To enter the lower hall of this temple, you must first walk through a dragon.

An abandoned Cold War missile radar site.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

This Italian stadium makes liberal use of fascist statuary to evoke classical sporting arenas.

This church, better known for its weeping portrait of the Virgin Mary, also houses the world's oldest existing piece of taxidermy.

This 18th-century dissection theater's frescoes display a gorgeous tension between the terrestrial and esoteric.

A medieval fountain lined with 99 unique stone faces whose origins and meaning remain unknown.

A domed disco abandoned since the '70s now attracts artists and explorers under its unique roof.

Da Vinci's equestrian statue, 500 years in the making.