Visitors to this Belgium graveyard are greeted by the grieving stone parents of the young men lost to war.

A rare example of World War I trenches from the British front.

Theme park featuring miniature replicas of European monuments.

This Greek temple, open only an hour a day, was the site of a war of tastes between an architect and an artist.

An underground city of salt.

A memorial to the beloved brown bear that served in the Polish army during World War II.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

Atop this library is one of the most beautiful green spaces in Warsaw.

This enormous 32-foot painting depicts Poland's greatest medieval battle in glorious detail.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

One of the oldest cemeteries in Germany was originally used for victims of a cholera epidemic.

Art installations, derelict railcars, and endangered grasshoppers all call this south Berlin park home.

The final resting place of many of Germany's most famous communists.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

This sprawling stone mosaic on Berlin’s Museum Island transforms archaeological finds and local legends into a walkable work of art.

One of downtown Berlin's last reminders of its Communist past.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

Elaborate tile work in this railway station tells the story of Portugal.

A hidden three-foot-wide house separates these two regal churches.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The final resting place of the poets Shelley and Keats.

The largest and most famous wax anatomical collection anywhere in the world.

A church of bones, decorated with 40,000 human skeletons.