Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

Swedish skyscraper with a 90° twist.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

A striking glass tribute to two sisters who suffered during Scotland's "Killing Time."

This pyramid is dedicated to all those who suffered martyrdom for civil and religious liberty in Scotland.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

An iconic and controversial ancient Iberian funerary urn with a hauntingly penetrating gaze.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

A lush indoor jungle fills this bustling Madrid transportation hub.

The most impressive of Basel's three remaining city gates.

A simple but powerful tribute to the 20 victims of the 1692 witch trials.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

The oldest platform carousel built in the United States continues to delight children in Martha’s Vineyard.

This candy-colored storybook village originated as a 19th-century Methodist campground.

A crushed gate and giant bronze head serve as a reminder of Greece's fight for freedom.

This striking sculpture of Icarus honors Greece's fallen flyers.

"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

Thousands of well-dressed mummies below a monastery.

Macabre astrological automaton clock dating to the late 1400s.

A former hen house turned curiosity cabinet displays one man's lifelong fascination with cannibalism.

This micronation's flag honors its favorite drink, Kaffegöken, or "cuckoo-coffee."

This contemplative sculpture made out of old machine parts is meant to be the first in a series of sculptures around the world.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.