One of the largest caves in the world open to the public.

During World War II, this rice mill became a Nazi concentration camp.

A dismembered holy head stares out from her beautiful reliquary at the St. Dominic Basilica.

First founded in 1472, this is the oldest bank in the world. Its history may explain why we call financial institutions "banks."

Does this strange mural depict witches battling beneath a penis tree?

If you ever wanted to touch a medieval mercenary’s three testicles, look no further.

Museum about life, death, and cannibalism in the Stone Age.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

Despite the name, this 16th-century structure in Galway wasn't built by the Spanish.

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

A diminutive, thousand-year-old church believed to be the smallest in Ireland.

While only two of the ancient buildings at this site are actually churches this was one of the earliest Irish pilgrimage sites ever.

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

This cemetery overlooking the Benbulben rock formation is the final resting place of one of Ireland's most beloved poets.

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

A stunning Victorian abbey and walled garden on a lakefront.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

The castle still holds traces of the abandoned Roman fort it was built atop.

The accidental discovery of this gilt bronze head led archaeologists to find the Roman Baths in the city of Bath

The abandoned funicular tunnel was a secret base for the BBC during World War II.

The Bristol Camera Obscura housed in an ancient windmill.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

The most visited, and possibly most controversial, museum in Germany.

An empty bookshelf commemorates the books which were lost during the infamous event