This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

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

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

Looming communist pillar with a Czech twist.

Walk through Czech history in Prague's largest graveyard.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Macabre astrological automaton clock dating to the late 1400s.

Tourists often confuse this beautifully ornate former cigarette factory for a mosque.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

A little sculpture with a large wardrobe.

Brussels' favorite peeing boy has a sister.

Climb inside an iron crystal magnified 165 billion times its normal size.

The legendary giant's severed hand sits on Antwerp's popular shopping street.

This statue dedicated to the story of a Flemish boy and his dog was relatively obscure in Belgium, but a cult sensation in Japan.

A man throwing a giant severed hand towers over Antwerp’s main square.

Most prolific publishing house in the 1600s open to the public.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

These mechanical goats first battled it out in the year 1551, all because of an overcooked deer.

In the summer, the area around this sculpture transforms into a vibrant concert venue.

One of the world's largest collections of medieval religious art.

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

An artificial date palm stands as a memorial to Warsaw's Jewish community.