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

What looks like a suicide in progress is actually a statue of Sigmund Freud.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

Inside this Krakow church, an explosion of psychedelic color.

An artificial hill and apparent calendric structure built in the Early Middle Ages immortalizes a legendary Polish princess.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

Central Europe's largest collection of mini-bottles is on display at this museum devoted to a bitter Hungarian liquor.

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

Memorials at a Florence railway station remember the citizens who were deported from Italy and sent to extermination camps.

An extraordinary house museum and cabinet of curiosities in the heart of Florence.

Art and armour fill every inch of this rich kid's Italian villa.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

More than a millennium's worth of municipal records preserve the political history of Austria.

Legend has it that this bronze orb, which sat atop an ancient Egyptian obelisk, once held the ashes of Julius Caesar.

A forgotten "city of water" underneath the famous Trevi district.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

Architectureal fantasy quarter of Rome.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The former 1920s mansion of a prominent Catalan developer was used as the Soviet Embassy during the Spanish Civil War, and there is still a bunker below the garden.

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

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

Infamous and now demolished panopticon prison built by its former inhabitants.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.