Opened in 1787, this old-world treasure is said to be the oldest restaurant in Copenhagen.

The castle used by the Danish Royal Family as a hunting retreat.

One of Scandinavia's largest mosaics pays tribute to Danish art and science luminaries.

Denmark’s oldest bakery is home to the 'Wednesday Snail,' one of the best cinnamon rolls on the planet.

The shiny silver little brother to Copenhagen's Little Mermaid statue.

This World War II airfield enjoys a second life as a public park.

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

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

An old Danish political institution where members of government can grab a drink off the record.

An unconventional and naturalistic sculpture depicting the artist marking his territory on an exterior faculty wall.

In the hometown of the Catholic saint and Nobel Peace Prize winner, a memorial dedicated to her legacy.

This pair of gilded girls atop an Art Deco building in Copenhagen were built to function as a weather indicator.

This mountainside mural of a person carrying a torch was created for the 1994 Winter Olympics.

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

This unique architectural wonder is home to luxury apartments.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

Taking the subway here means doing so over a bridge located in the middle of an estuary.

A restaurant and observation deck built in a unique broadcasting antenna.

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.