A group of abandoned factories and buildings that have been revitalized and are now used to promote culture, education, entrepreneurialism, and sustainable development.

One of the few remaining temples of the Religion of Humanity.

Cozy basement bar sports an inventory of over 2,000 beers.

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

Meet the bronze beloved pet to a family of famous peeing statues.

A little sculpture with a large wardrobe.

Climb inside an iron crystal magnified 165 billion times its normal size.

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

A whimsical bridge adorned with decorative dragons.

A public work of art that also provides some relief from the summer heat.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

An eerie, derelict amusement park in Berlin.

For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.

This beautifully designed star-shaped fort was the premier defense system of the late 1500s.

This imposing tower named after the mythical sword of King Arthur is considered the tallest freestanding climbing wall in the world.

Every winter, this former planetarium is transformed into a massive, brightly-lit Christmas ornament.

Preserving the research tools, unexpected inventions, and odd collections of generations of college professors.

Colorful and chaotic stacked hotel in North Holland.

A historic observatory now an astronomy museum beautifully situated at the moat of the Middle Age city centre.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.