These murals stand as reminders to the troubled history of this Northern Ireland city.

These barriers stand as stark reminders of Northern Ireland's troubled past.

Every year locals give the bear a fresh coat of paint to preserve its signature goofy grin.

The "Black Arch" guards the entrance to the picturesque Glens of Antrim.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

The atmospheric road was never meant to be so creepy.

An enigmatic monument to the Irish revolutionary who plotted an uprising against British rule.

This statue celebrating everyday life in Dublin has a few unsavory nicknames.

This is the largest cemetery in Ireland and the first cemetery museum in the world.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

One of the most easily accessible examples of the rare 1960s UFO houses.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

This beloved marketplace mascot poops money and grants good luck.

This decommissioned surface-to-surface missile resides outside the American Legion Post in Pennslyvania.

The United States Capitol's former columns still stand.

Decades before the scandal, this staircase on the river was a literal "water gate."

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

This historic old movie house was the scene of one of the Blob's most iconic attacks.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Famously misunderstood wonder of the ancient world

An underground city of salt.

Home of a 28-foot tall stalagmite known as the War Club.