Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.

The Bauhaus-style former industrial complex is considered the world's most beautiful coal mine.

Largest illuminated advertisement sign in the world.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

The Stonehenge of Wales is one of the grandest neolithic dolmens still in existence.

Three bridges straddle a stream, one stacked upon the other.

Ancient Bronze Age rampart that was used into the middle ages.

This modest plaza in Moneygall, Ireland has cashed in on its distant connection to the U.S. president.

The ancient tomb acts as a calendar that keeps perfect time.

An ancient neolithic tomb that only sees the sun twice a year.

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

A particularly disconcerting tribute to Irish martyrs.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

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

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

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."

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

The modern birthplace of Irish freedom.