A treasure trove of astronomical, mathematical, and scientific instruments at Cambridge University.

One of the largest mechanical models of the solar system in the world.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

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

This home of a taxidermy hoarder is among the grandest and most singular of historic English estates.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

Where the lovelorn find a home for their sentimental keepsakes.

An eclectic art form practiced by untrained masters is celebrated at this museum in the heart of Zagreb's old Upper Town.

This one-time health resort was used by aristocrats around the world.

A whimsical bridge adorned with decorative dragons.

Austria's ultra-modern art museum looks like Cthulhu's giant alien heart.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

A centuries old castle atop a dormant volcano houses museums devoted to both women and witches.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

The works of poetry's biggest names grace the walls of the city of Leiden, all carefully painted by hand.

A 'living museum' in Leiden, the oldest of its kind in the Netherlands.

Museum dedicated to the terror regimes of Hungary.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

Bridge that died in war and was resurected.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

A number of craters left by fatal mortar strikes have been filled with red resin to remember those lost during the Siege of Sarajevo.

This historic cemetery was inaccessible for several years due to dozens of land mines.

Oriental bazaar in the heart of Sarajevo.

These lovely Turkish-styled baths were brought back to life after winning a reality show competition.