This ultra-modern wooden boardwalk turns the ocean into a swimming pool.

Danish observation tower designed to look like a giant beer bottle.

This sublime architectural marvel is a rare example of an expressionist church.

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

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

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

This encrypted monolith protected a secret of Norse mythology by hiding in a church wall for over a millennium.

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

Remnants of an exploded schooner and wrecked submarines form a breakwater.

Hamburgers are intensely proud of their tunnel beneath the river.

Six beautiful wooden giants are hidden around Copenhagen.

An artist has turned what most people would consider a bathroom nightmare into a work of political art.

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

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

This bridge's unique architecture honors nautical heritage and encourages self-awareness.

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

The world's first combination ski slope and power plant.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

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

The world's only above water sand volcano, believed to once be the bathtub of a priest.

According to legend, this boat-shaped henge is built over the grave of a mythic king.

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

One of the longest footbridges in Europe.