A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

Rebuilt remains of a temple to Roman god Mithras.

A hands-off space for graffiti artists to hone and display their skills.

This whimsical statue dumps water on its head to symbolize knowledge flowing into his brain. Or maybe booze.

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

A floating cat sanctuary on an Amsterdam canal.

An ancient octagonal weather station named for the eight Greek gods of wind.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

Stockholm's tiniest statue is of a small boy looking at the Moon.

This early Norman castle was the first historical monument protected by an act of Parliament.

This striking observation tower shaped like a spinnaker sail is the newest icon in historic Portsmouth.

The first piece of public art dedicated to LGBT rights.

An exercise in radical design and social living that became the epicenter of Soviet spy networks in London.

The housing complex served as an anti-fascist fortress during the Austrian Civil War.

Iceland's tribute to its thankless civil servants.

Rows of stone statues are dressed up to mourn children that are lost before birth.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

In the center of Wrocław's old meat market stands a somber tribute to the city's livestock.

Travelers who fall victim to this mermaid's charms are destined to stay in Užupis forever.

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.

These ornate arches show how the course of the River Thames has changed.

A sublime medieval path adorns the marble floor of one of the most beautiful Gothic cathedrals in France.

A collection of machines designed to break things for science.