The largest collection of two headed animals in the world.

A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

An eccentric garden of sculptures crafted in India decorate an Irish green space dedicated to Alan Turing.

A hot dog stand where the heads are just as hot as the dogs.

America's smallest "national forest" has only 33 trees.

This small primate research island is teeming with playing, fighting wild monkeys.

The largest self-built castle in the U.S., six decades in the making.

This collection started by a Cornell professor once held more than 600 human brain specimens, including the one that belonged to its founder.

A sacred lake with thousands of sacred carp and a biblical history.

A beautiful geyser under environmental threat.

Giant heads occasionally litter the industrial Houston neighborhood where sculptor David Adickes has his studio.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

Two stunning 17th-century libraries and a cabinet of curiosities.

The largest earthwork effigy in the world.

Antiques by the Bay.

This mill on Lake Erie appears to shrink as a viewer approaches thanks to an optical illusion.

Statue of Lenin, from Cold War era Czechoslovakia, now in a neighborhood of Seattle.

Hoax, mistake, or evidence of dinosaurs in human times?

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

Spain's stunning solar energy plant.

Subterranean house made out of a grain silo, located in the Santa Cruz Mountains.

The original film set of Luke Skywalker's Tatooine home from the 'Star Wars' trilogy.

The world's largest vertical wind tunnel.

One part antique store, one part curiosities hodge-podge.