Inside this Krakow church, an explosion of psychedelic color.

Learn the fine art of making a centuries-old treat at this hands-on food museum.

The unsettling remnants of a torn down movie set lies nearby the ruined location of the actual Płaszów Labor Camp.

Extremely famous in his native country, this Cracovian painter is all but unknown beyond Polish borders.

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

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

An open-air "garden" of mural art that changes weekly.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

Turntable anonymously received orphans, alms, and groceries.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

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

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

A replica of the home of a famous fictional troll family.

A cathedral resurrected from the ashes of one of Europe's greatest urban fires.

Pigduck of Turku.

An abstract and eyecatching clock/fountain is the centerpiece of this little-known German city.

This museum promotes informed contraception by documenting its often secret past.

The topiary maze at the Habsburg hunting lodge.

Two stone columns flank the grand Venice square, but there were supposed to be three.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.