An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

The highest point in Texas is capped by a big silver pyramid.

Steep canyon walls hide a forested oasis in the West Texas desert.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

More than 700 species live within this murky marvel of a swamp on California's coast.

The site of the notorious Camp Sumter Prison is now a peaceful memorial.

The small first-floor apartment where the author wrote her Pulitzer Prize-winning book 'Gone with the Wind.'

Legend says if this neo-Gothic basilica is ever officially completed, the world will come to an end.

Quito's historic, main square dates back to the 16th century.

A short volcanic hill in Quito doubles as a stellar observation point of an iconic statue.

It took 160 years to complete the most ornate church in Ecuador.

The world's tallest aluminum statue is also the world's tallest image of a winged Virgin Mary.

An elaborate shrine dedicated to the four corners of the world unfortunately misses its mark.

A whimsical monument marks the highest point in Kansas, not that you could tell by the looks of it.

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

This intricate Hindu temple is the largest of its kind outside of India itself and was constructed like a giant puzzle.

Like Mars, but much closer.

The mysterious 855-foot zigzagging stone wall has been baffling people for centuries.

The highest point in Oklahoma used to be a lawless outlaw's paradise.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

Stroll through a wonderland of stupendous moss-covered trees.

The bullet-banged DIY suit of armour belonging to Australia’s most famous outlaw.