This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Eco-village hidden in the foothills of the Alps that created a massive system of psychedelic underground temples.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

This charming pup is meant to celebrate the youth and stubbornness of the city's students.

This rusting remnant of the local herring industry is being given a second life.

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

The world’s first statue of the late Apple co-founder.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

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

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

A sharp sculpture made of thousands of pieces of jagged glass.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

An abstract monument to a symphonic composer.

Collection of nearly 500 concrete figures sculpted by the late Veijo Rönkkönen.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

This huge industrial sculpture looks like a UFO and a factory had a baby.

This Danish art forest places loud works of contemporary art among the pensive silence of nature.

An enormous playhouse designed to look like 21 stacked Lego bricks, with another 25 million colorful Legos inside.

Op-art architecture designed for happiness.

A German apartment building hosting as many trees as human occupants.

Crop circles inspired this whimsical garden in Germany.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

A bizarre house filled with an astounding array of collections.