Hindu temple of the dead home to hundreds of long-tailed macaques.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

This futuristic German television spire is actually the world's largest digital clock.

Unable to build support structures on glaciers, the engineers for this tramway were forced to design a unique system.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

Hundreds of hidden passageways weave through the old quarters of Lyon.

The world's first funicular powered by a steam engine.

This statue stands in honor of Antoine de Saint-Exupéry, the French author of 'The Little Prince' and an aviation hero.

A flooded Mexican cave that hides a river beneath the water.

What began as an illegal art installation has become a symbol for unity, ocean awareness, and coastline preservation.

The oldest structure in a beachside California city was built to serve eight students.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

One of the largest trees of its kind in California.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

North America's largest accredited model railroad museum.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

A herd of 150 bison live on California's Santa Catalina Island and are at the heart of an ongoing debate between environmental protection and economic expansion.

These unusual houses look like giant boats that washed ashore on a residential street.

One of the last surviving buildings of a once large and thriving Chinatown.

The final resting place of New Orleans' most famous voodoo priestess.

Now a pedestrian bridge, this was once part of a narrow-gauge railroad that ran along the east coast of Kauai.

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

Classic game cookery takes center stage at what's widely considered London's oldest restaurant.