Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Relive a Polish uprising via an enormous, century-old cyclorama.

A collection of old neon signs from all over Poland line a secluded courtyard.

The silly symbol for an underground protest group is now scattered around the city.

A striking public sculpture representing the period of martial law in Communist Poland.

The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.

Christ's blood preserved in a Belgian town.

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

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Meet the bronze beloved pet to a family of famous peeing statues.

In the Netherlands, one of the world's largest private car collections can be found.

Lumps of significant stone from around the world surround a flaming monument for peace.

The largest 19th century panorama in the world still in-situ.

A miniature city, once ruled by the Queen of the Netherlands.

In an odd geographic anomaly this city borders two different states on opposite sides of town.

Formerly known as the Malay Quarter, Bo Kaap is a colorfully-painted suburb located in the “Mother City” of South Africa.

This African beach is home to thousands of rare mainland penguins that are known for their annoying voice.

An abandoned water park overtaken by the dunes.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

A musical instrument played by the sea.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.