In 1927, a biplane disappeared while attempting to complete the first non-stop transatlantic flight between Paris and New York City. This memorial stands at the last place it was seen.

An intricately decorated tiny place of worship.

Underground hospital complex constructed by slave laborers during the German occupation of the Channel Islands.

An 800-year-old island castle in Guernsey's main harbor.

Twisted trees shaped by coastal winds make this woodland look like something from a spooky story.

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

This monument to those fallen in the World Wars is accompanied by a U-boat that Germany bought for a Deutsche Mark.

The world's first and only three-segment bascule bridge folds up into the shape of a capital "N" to let boat traffic through.

These hilariously laughing bronze figures lampoon empty promises while encouraging civic engagement.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

As seen in the Spice Girls ‘Wannabe’ music video.

The last vestiges of a magnificent Victorian-era train station can be found in this pub.

This tribute to the fictional detective stands at the famous literary character's address.

An extraordinary collection of artifacts spanning 500 years of medical history.

Some of the most enduring novels in English literature were written within the walls of this Georgian-era building.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

A centuries-old forgotten underworld lies beneath Malta.

These 19th-century military fortifications spanning the island of Malta now form a nice countryside hiking trail.

An abandoned logging settlement nestled in the woods near a popular ski town.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

The very first subway station in New York City is beautiful, decked out in chandeliers, and ... abandoned?

An effigy of a trapped paratrooper dangles from a Normandy church to commemorate one remarkable D-Day event.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.