This oddly beautiful water cistern is a techno-temple to the wet stuff and a multimedia masterpiece.

In the center of Wrocław's old meat market stands a somber tribute to the city's livestock.

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

A 90-ton, gravity-defiant steam locomotive shoots for the skies in this bizarrely beautiful public artwork.

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

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

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

A bookstore dedicated to the intersection of comedy and art.

One of the most photographed buildings in a city known for its Modernista architecture is an abandoned squat.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

A stately palace has been converted into the world's largest cannabis museum.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

A cemetery in Barcelona's Poblenou district is home to this touching funerary statue, which depicts death in the form of a winged skeleton.

This stunning iron gate designed by Modernist architect Antoni Gaudí is filled with mythic symbolism.

On the wall of this medieval walkway, a symbol of the Spanish Inquisition.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

This cafe offers a curated collection of treats and tipples made by monks and nuns.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

Barcelona's only remaining tram system takes riders to the Tibidabo funicular.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

According to tradition this is the oldest church in Venice, but its actual age is a mystery.

This millstone commemorates a gruesome tale that may have been the source of the city's name.