These concrete domes were installed on an Icelandic bluff to honor a very specific musical tradion.

An isolated, rusty phone booth commemorates Iceland's first international telegraph cable.

This tiny cabin was home to one of Iceland's most famous painters and was the only land he ever owned.

Most of Britain's gold reserve was secretly stashed here after the start of World War II.

Charles Dickens described the concert room in this amazing Victorian hall as "the most perfect room in the world."

The grand complex of buildings that comprise Liverpool's Exchange Flags includes a vast World War II bunker that has been frozen in time.

The red letters in the literary pavement leading to the library form a mysterious code.

The quiet field that inspired one of the most famous songs of all time.

A marine aquarium with an astounding variety of fish hides in the basement beneath the famous Palm House.

This iconic high-rise residential block was one of the last to be built in the Brutalist style.

The medieval woodcut-style artwork chronicles life in medieval London.

Sculptor Antony Gormley used chaos theory and fractal growth to design his tallest creation.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

A wonderfully eclectic Victorian aquarium lies in the basement of the Horniman Museum.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

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

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

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

This former medical factory gives home to cutting edge arts in the shadow of a gas works.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

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