A Buddha-filled cave that is named after a giant monster spider.

Myanmar's Mount Olympus atop a 2,500-foot volcanic plug.

This gem-encrusted temple is said to contain some of the Buddha's hair which can make the deaf hear and the blind see.

Gigantic unfinished stupa and the world's 2nd largest bell.

Over 2,000 ancient temples dot the Myanmar landscape at the site of this famed archaeological site.

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

This skewed English house has looked like it's going to fall over for centuries.

The oldest working mechanical clock in the world.

The final resting place of soldiers' loyal canine companions.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

Famously misunderstood wonder of the ancient world

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

360° views of the city plus five floors of optical illusions and hands-on science.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The magic's in the hole!

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A geological mystery on Camelback Mountain.

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