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

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

More than 5,000 artifacts donated by the people of the city, plus a room entirely devoted to the band U2.

An unusual manor of stunning beauty, born out of a crippling disease.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

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

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

Swirling layers of white and red rock earned these mountains their festive nickname.

A sober museum housed in the original administrative building of one of Stalin's largest gulags.

One of the most horrible legacies of the Cold War is a site where the Soviet Union tested nuclear bombs on civilians.

Mysterious spherical rocks in the semi-desert of western Kazakhstan.

Rusting ships sit in a desert where a sea used to be.

World's oldest and largest space launch facility, once a secret missile testing site.

A brilliant turquoise lake in the mountains.

An abandoned Soviet-era mining town in the mountains of South Kazakhstan.

Model Trains and Much More in Hamburg.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.