A symbol of friendship between the mountainous regions of Switzerland and Bhutan.

Where condemned pirates met their grisly end at the gallows on the River Thames.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

The fences outside some of South London's estates are made from recycled World War II stretchers.

Legends say that this Art Deco apartment building almost became Hitler's British headquarters.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

This hidden green space is the city's second largest conservatory.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

This hauntingly beautiful cemetery outside a medieval citadel is full of winding paths and ivy-covered graves.

Nine centuries-old fortresses guard the walls of this medieval Romanian city.

An unassuming London park is actually a pilgrimage site for modern clowns.

Rebuilt remains of a temple to Roman god Mithras.

England's most notorious suicide spot.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

A natural wonder in south Denmark.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

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

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

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

Six beautiful wooden giants are hidden around Copenhagen.

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