This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

This unique architectural wonder is also tied to one of the 20th-century's most renowned writers.

This giant sculpture made of trash is a critique of society's wastefulness.

A hidden three-foot-wide house separates these two regal churches.

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

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

A pair of gigantic baby heads greet passengers at Atocha Station.

One of the world's first dedicated bank buildings in the world is now the oldest one.

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

The reconstruction of this prominent building fulfilled a long-written command.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

The oldest continuously operating pharmacy in Europe.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

This beautiful 19th-century temple stands atop the ruins of its predecessor.

Go surfing on this urban wave, "hacked" by local surfers.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The beautiful, ornate weather station is the most popular geocache in Salzburg.

Op-art architecture designed for happiness.

A man throwing a giant severed hand towers over Antwerp’s main square.