Two small chapels housed inside an ancient tree.

This Native American cemetery features decades-old spirit house hidden behind pine trees and moss.

Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.

This structure among the trees was the result of divine inspiration.

A museum where visitors can learn about greyhounds and (more importantly) pet them.

An optical illusion found amid a logged redwood forest.

These cinderblock farmhouses were actually World War II radar stations in disguise.

The former home of a conniving 17th century politician is now a high-end hotel.

The heartbeat of modern Uzbekistan’s thriving market culture.

This Viking-inspired miniature golf course features a pirate ship and views of Icelandic landscapes.

Once the largest town in eastern Yuba County now sits abandoned.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

What do we know about the real woman behind one of the Beatles' most famous songs?

The last Viking king of Denmark is buried inside the crypt of this cathedral.

The fossilized remains of ancient California redwoods.

California's own majestic geyser is powered by a subterranean volcano.

The Grand Canyon of Texas.

Underwater restaurant at the coral reefs of Eilat.

New York's oldest and possibly grandest keeper of books.

A striking symbol of the Bulgarian capital.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

This (occupied) house is 10 feet wide and full of spite.

The alpine falls where Sherlock Holmes apparently met his demise can actually be visited.