The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

This small, but long-running hobby club has built one of the largest model rail lines in the US.

The large fjord lake is thought to be the home of "Ogopogo," a giant sea serpent.

This expansive bridge in the Canadian wilderness was originally just built for friends.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

Orthodox church partially financed by Tsar Nicolas II.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

Chicago's North Park Village was once the largest municipal sanatorium in the country.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

Now harmless, this looming post struck fear into the heart of medieval troublemakers.

A musical instrument played by the sea.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A statue honoring 44 continuous years of greeting passing ships.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

A former Confederate hospital serves as a remembrance of wounded and dead soldiers.

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

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

At 207 feet, one of the world's longest continuous escalators.

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

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.