These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

A gas station has taken the place of the home of the 19th American President.

A miniature world of concrete and stone in Springfield, Ohio.

The tragic reality of a town riddled with rumors of haunts, chemical spills, and serial killers.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

This permanent exhibition celebrates the finest of our heartless automatons both real and fictional.

The permanent home of Elektro, the celebrity automaton of the 1939 World's Fair.

Lithuania's outdoor sculpture trail of wooden folk art.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

The most decorated dog of World War I is preserved in the Smithsonian.

After a profound show of devotion for his master, a dog becomes the symbol of loyalty for an entire nation.

Stalactites and stalagmites in a beautifully lit cave.

An abandoned relic of the city's failed experiment with below ground transit.

A castle built by an eccentric medieval enthusiast in rural Ohio.

This red-eyed chrome beast pays homage to the popular modern myth of West Virginia's insectoid monster.

Erotic art covers the walls of the largest ancient pleasure palace.

The Emperor Tiberius' palace of debauchery.

The glowing blue Nymphaeum of Emperor Tiberius.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

Opinions differ as to whether this Arizona tree was actually used as a Wild West jail, but that hasn't stopped the town from capitalizing on it.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

This Minnesota town celebrated the state's 100-year anniversary by creating a massive ode to nature's smartest bird.