The sad remains of a monument to martial arts legend and movie star Bruce Lee—in the middle of Balkans.

Bridge that died in war and was resurected.

Incredible labyrinth of man made caves.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

This historical Netherlands fortress still bears the marks of its single siege.

An industrial relic is now one of Europe's most staggering art spaces.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

The pedestrian traffic signals in Brazil's teeming metropolis light up with clues to nearby landmarks.

This Stockholm light tower can be controlled by anyone with a smartphone.

Early habitat dioramas and home of the elusive gaff, the skvader.

The world's largest model of our planetary system.

Op-art architecture designed for happiness.

This simple roadside art installation ended up sparking a folk art movement and a controversy of international proportions.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Half curiosity cabinet, half late night hotspot, this Brazilian bar is helping turn a dangerous neighborhood around.

Legends surround an ancient tree trunk riddled with nails for good luck.

Try not to get lost in this picturesque Brazilian labyrinth of the dead.

One of São Paulo's tight urban intersections has become a haven for graffiti artists ever since a single Batman started the trend.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

An art museum with an eclectic design and a scandalous past.

Beautiful public park off the beaten path and away from tourists.

Crumbling remnant of Rio's colonial past tucked behind Corcovado mountain in the neighborhood of Cosme Velho.

A 125-meter long "tribute to the Brazilian people."