Northern Ireland's Brobdingnagian stepping stones.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

This unassuming alcove in London’s famous Tower Bridge once served to capture, store, and display dead bodies from the River Thames.

A sculpture outside London's oldest cathedral honors the Mohegan chief who died while petitioning the king.

Home of modern dancer famously strangled by her own scarf.

A Barbary Coast watering hole built into a Gold Rush shipwreck.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

This residential door allows San Francisco muggles a glimpse at the wizarding world.

This private residence was the template for one of the most beloved television homes of all time.

Noble beasts perhaps, but not the Emperor's dogs.

Faceless white figures loom over the city from the rooftop.

A shining, cold, black organ lies in San Francisco's financial district.

A pair of mutilated bronze octopuses slump at the base of the monument honoring California's admission to the U.S.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

An artsy hidden staircase leads to breathtaking views of San Francisco.

According to legend, those who pray at this statue will also be granted a wish.

A unique structure located on the grounds of one of five grand palaces that were built by the Joseon dynasty.

A theme park made of glass, from the gleaming books on the shelves to the crystal fish in the mirror lake.

The burial ground of two kings and a queen is now a calm city park in the middle of bustling Seoul.

The name of the only golden Buddhist temple in Korea translates as "the temple that protects the country."

The world's longest bridge fountain has hundreds of nozzles that create a beautiful, illuminated spectacle.

Secret North Korean passage discovered below the world's most dangerous border.

South Korea's love of the silly photograph is on full display at this goofy collection of trompe l'oeil paintings.

Massive crater in central Oregon.