This Roman arena once played host to bloody gladiatorial battles.

Touching the iron railings of Tarragona's balcony to the Mediterranean is said to bring good luck.

With a facade that measures just 107 centimeters, this five-story building is one of the skinniest in Europe.

Former 19th-century apothecary serves a top-tier version of Valencia's signature cocktail.

This house's itty bitty size means no humans allowed.

Vibrant street art created with mixed media.

The magnificent sanctuary is Spain's first purpose-built structure of its kind.

This pub has roots dating back to 1430 and serves as the setting for multiple Charles Dickens stories.

Things aren't quite what they seem at this mind-bending museum.

Ever-growing collection of devils in art.

An open-air art gallery that aims to share the stories of the people who live around it.

This mysterious pyramid is said to be part of a complex web of occult and Freemason symbols.

Special benches that play Chopin's music are scattered throughout his native city.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

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

This hidden collection of everyday objects illustrates life within communist Poland.

This museum houses and extensive collection of technology contributed by the Polish people.

This biographical museum honors the groundbreaking scientist at her birthplace in Warsaw.

Legend says this is actually a heartbroken prince waiting for his true love's kiss.

A delightful museum entirely dedicated to the tiny homes of dolls.

The last king of Poland was interred in this church nearly 200 years after his death.

This bell stars in a tragic love tale and is said to make wishes come true.

Catch a scenic view of Warsaw's Old Town from the top of a centuries-old dumping ground.

A menacing statue of this mythical creature can be seen at the legendary site of the monster's lair.