One of Ireland's most infamous prisons for rebels including men, women and children.

The modern birthplace of Irish freedom.

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

There has been an astronomical clock on this spot since the 14th century.

A proud bronze billy stands as an eternal symbol of Ireland's oldest festival, where a goat is made king.

A museum dedicated to the tragedy of Bloody Sunday.

The atmospheric road was never meant to be so creepy.

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

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

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

Iceland's largest lagoon is home to stunning multi-colored icebergs.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Three columns of volcanic rock shoot out of the ocean.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

In Northeastern Iceland lies something of an oxymoron: a steaming desert.

The most powerful waterfall in all of Europe.

A giant red chair bolted to a rock on a remote mossy hillside in Iceland.

Rising from the sea like a stone monster.

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

An encyclopedic collection of mammal penises.

This kitschy curio wonderland is full of fake animals, teak tables, and a cacophony of random bric-a-brac.