This massive home was constructed by one of the greatest conservationists in Colorado history.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

The real-life site of Ichabod Crane's infamous gourd attack.

This three-dimensional brick mural is the longest of its kind in the United States.

These ruins once flourished as the capital of the Lydian kingdom, often credited with the invention of metal coinage.

The former stronghold of the Malla Dynasty has remained virtually unchanged since the 17th century.

Inside the corridors of this flea market, visitors are sure to find some obscure and odd treasures.

Visitors to this arboretum are greeted by three smiling giants crafted from sustainable materials.

Sitting atop San Francisco's tallest hill, a cross honors the victims of the Armenian genocide.

The longest continuously operating Elk's Lodge in the country.

The approximate spot where the last Grand Master of the Knights Templar was put to death.

This historic graveyard was partially paved over to create a streetcar line.

This historic square in Nepal is home to temples dating back to the third century.

A Christian monastery stands on what was once a holy Incan temple.

The oldest operating Mississippi River–style steamboat still navigates the Ohio River.

This extremely remote border crossing was closed to prevent smuggling and looting.

An antique narrow gauge railway line still running through the Colorado and New Mexico mountains.

The only quarter of the Old City not dedicated to a major world religion.

One of the few surviving Panama Canal steam shovels stands outside a tiny Colorado mining museum.

A powerful tribute to the victims who suffered under Ethiopia's most devastating regime.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

The oldest operating cemetery in Denver is the eternal home of some of the Centennial State's most famous residents.

This candy shop has been serving up sweets to the Louisville area since the 1850s.

An ancient temple to the Hindu god Shiva surrounded by jaw-dropping scenery.