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

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

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

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

Copenhagen's celebrated theme park and gardens.

A favorite with sightseers and locals alike, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

The real-life site of Ichabod Crane's infamous gourd attack.

"A hideous albatross in the Hudson River Valley."

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

Site of one of World War I's most horrific scenes.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

A swath of France so devastated by war it is still forbidden to go there.

A rare example of World War I trenches from the British front.

In the shadow of a former battleground, the resting place for nearly 2,000 soldiers who died in World War I.

This memorial museum chronicles the apocalyptic destruction of the First World War.

The grave of the famous painter is marked by a simple stone in the ground.

A Museum of Psychiatry in a still-operating mental institution.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

Lumps of significant stone from around the world surround a flaming monument for peace.

The official motto of Luxembourg reminds passersby of the Luxembourgish commitment to their national identity and sovereignty.

In an area where the remnants of WWI are discovered on a regular basis this preserved frontline trench may be the most amazing.

A moving memorial to the fallen and missing from WWI trenches.

An ancient Roman relief beautifully preserved on the façade of a house.

Dedicated to the American general whose reply to a German demand for surrender was simply "Nuts!"