An echo chamber with a waterfall wrapped around its base at the Embassy of Canada in Washington, D.C.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

Once part of a magnificent Tudor palace, this wine cellar is a time capsule underneath the Ministry of Defence.

The world's largest second-hand graces a clock surrounded by constantly changing flower beds. 

A 30-foot-high stream of chocolate flows continuously at the Lindt Home of Chocolate.

This work of engineering is imbued with elegance and ingeniousness.

Constructed along the shores of Lake Zurich, this pavilion is a walk-through work of art.

This relic is one of the last survivors of the earliest eras of the American railroad.

An unrealized dream to wirelessly electrify the entire Earth.

Conspiracy theories and occult legends surround this mysterious natural rock formation.

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

Part arcade, part museum, this collection features vintage and modern pinball machines.

A Danish fisherman spent 25 years covering nearly every inch of his home with tens of thousands of shells as a gift to his wife.

Preserving the memory of the narrow railroads that once crisscrossed the state of Maine.

These massive concrete balls were used to mine gold in Virginia.

Paths are maintained, but trees have taken over plots.

Country fans may flock to Nashville's music scene, but this Appalachian town is where the genre was born.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

An iconic Soviet statue of working-class people.

The largest civilian satellite control center in the world is located in the middle of a drained lake.

This brick-lined pedestrian walkway was once a railway tunnel used during the Civil War.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

In the depths of the Everglades, one man has dedicated his life to studying the elusive Skunk Ape.