An icon among Florida's pre-Disney tourist attractions.

A tribute to Ponce de Leon's supposed quest for eternal youth.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

The largest copper mine in Arizona, this enormous open pit emerges from the hills like an alien landscape.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

Ancient pueblos built into the base of a natural canyon wall.

This historic national park is covered in the stunning ruins of red rock pueblos.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Most-visited and most-photographed slot canyon in the American Southwest.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

This restored 17th century synagogue is one of the few remaining structures in Morocco’s ruined Jewish quarters.

The courtyard of this small Marinid madrasa is a dazzling example of intricate Islamic architecture.

The other side is actually green.

Mosaics, storks, and brothels—this ancient city has it all.

World's largest film studio, where visitors tour the decaying sets that litter the harsh desert environment.

One of England's most famous churches hides a pair of little known architectural treasures.

An architectural oddity hides in plain sight on this iconic London bridge.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.