This quarry filled with 65 million-year-old limestone is now home to a nature reserve.

At this bohemian accommodation, guests who dream of joining the circus can spend the night in themed wagons.

Swedish skyscraper with a 90° twist.

This poignant sculpture of a gnarled weapon is a symbol of non-violence.

These waste baskets play a few risque messages to discourage littering.

20-foot tall lamp mumbles Swedish to celebrate the holidays.

These unique stained glass windows were designed by local children using a modern flair.

This bronze marker acknowledges an embarrassing royal blunder.

This millstone commemorates a gruesome tale that may have been the source of the city's name.

This chimerical bridge/tunnel appears to dead end right into the sea.

This secret collection of the strange and occult was rediscovered in a forgotten room of an old house.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

Visitors are treated to a stained glass kaleidoscope interior inside this work of art.

Iron Age "bog person" preserved for over 2,300 years.

Museum on earth sciences featuring a recreation of a famous curiosity cabinet.

Bored potato-guarding Nazis etched their thoughts onto a brick storage building in Copenhagen's Meatpacking District.

A collection of noses tucked inside an art museum reveals how times have changed.

The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

Old Danish castle immortalized in Shakespeare's Hamlet.

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

The largest bottled beer collection in the world holds over 22,000 unique beer bottles.

A novel collection of medical curiosities housed in an 18th-century surgeon training academy.

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