One of only two commuter aerial tramways in the United States.

Moonbows over Kentucky.

Kentucky, Tennessee, and Virginia meet at this point in the Cumberland Gap.

An eccentric inventor's castle home with its own indoor weather system.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

A real (but thankfully not live) missile stands tall as a monument to the United States military in the small town of Cordele.

The sign that drew attention to a young boy's cucumber stand is now the name of his fruit superstore.

Bad farming practices caused this unnatural natural wonder.

Ruins of a Carnegie family mansion on Cumberland Island.

This recently rediscovered Civil War-era submarine was the first to ever sink an enemy ship.

Despite being burnt down multiple times, the ruins of this South Carolina church are still standing.

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

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

This short bridge is the only thing connecting a tiny Irish island to the mainland.

Northern Ireland's Brobdingnagian stepping stones.

A collection of housewares from recent Irish history adjoined by a tower from ancient Irish history.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

Experience what life was like in Ireland during the Viking and medieval ages.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

Along this wire fence, travelers have been leaving a particular memento since 2012.