This tiny museum's sizable collection is jammed into a former underground public toilet.

A vintage video game wonderland in downtown Reykjavik.

The largest whale museum in Europe allows visitors to walk among life-size giants.

An encyclopedic collection of mammal penises.

Learn about Iceland's hidden folk at this school dedicated to the study of elves.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The romance of early commercial flight still fills this Art Deco destination.

A former major munitions plant that has been converted into a sprawling art space.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

Under a playground is a little-known sealed train tunnel that likely contains the bodies of workers trapped by cave-ins.

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.

The narrowest house in America is seven feet of pure spite.

A convincing little bit of ancient Egypt smack dab in Richmond, Virginia.

Hidden for 165 years inside a building designed by Thomas Jefferson are the remains of what may be America's first educational chemistry lab.

This old-fashioned carhop restaurant gave the world the waffle cone.

Once on display alongside a giant Gumby, it’s as tall as a nine-story building when fully extended.

This maze-like slot canyon is a unique gem within an already fascinating geological area.