This natural sea arch highlights Ireland's rugged coastal beauty.

The remains of this deep, dark mine have left behind a haunting rocky warren of tunnels.

The home of Ireland's last leprechauns is officially protected by the European Union.

A steam trawler with a whiskey-soaked history driven ashore in 1960 resides rusty but still standing on the shoreline.

Petrified footprints of one of the very first vertebrates to walk on land.

This 30-foot pile of rocks may be the grave of a mythological Irish queen.

After being destroyed by IRA sympathizers, the ruins of this stately Irish manor have sat vacant for decades.

A spectacular hidden beach in Ireland has the dark, disturbing nickname of "Murder Hole Beach."

Once the longest bridge in Ireland, this rusting span sits abandoned and overrun by nature.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

This ancient Irish religious site is covered in ancient carvings, many of which have barely aged.

Local legend says the remains of Father Christmas lie within the medieval grounds.

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

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

400-year-old garden, restored to beauty.

The oldest (maybe) swimming pool in Iceland is a stunning oasis built into the side of a lush hill.

Two ancient Buddhist temples crown this dramatic rocky pinnacle.

Isolated atop this Balinese sea crag is a lovely Hindu temple that is said to be guarded by sea snakes.

A "simple-hearted artist" turned an isolated Icelandic valley into his own art museum.

This isolated structure beckons adventurers with sublime views of the Faroe Islands.

One of the smallest towns in the United States.

Originally slated to become a luxurious resort, this structure is now a graffiti haunt reclaimed by nature.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

The oldest residential street in Europe also features an optical illusion.