An underground spring in a labyrinthine cave system, decorated with stalagmites and stalactites.

Saunter along the banks of one of North Carolina’s wildest rivers

This impressive ledge seems to float above the Upper Buffalo Wilderness.

A colorful, architectural experiment designed to increase a resident's longevity.

The original building of a mining school endowed by one of the barons of the Comstock Lode now houses a museum of earth science and mining history.

Towering earthen formations that rise straight out of the ground in New Zealand .

The castle used by the Danish Royal Family as a hunting retreat.

A jumble of concrete on the corner of one of London’s terraced buildings is actually a work of art.

Once called "the biggest room in the world," this Victorian-era hall is so large that it contains a smaller 1970s heptagonal theatre.

A bit of retro transportation flair preserved in the world's largest department store.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

The "Seinfeld" diner.

Spectacular volcanic cliffs along the Crooked River invite hiking, rock climbing, and photography.

A unique interactive experience of everyday life in communist Yugoslavia—a very different time in Croatian history.

A beautiful modern church dedicated to the teleporting patron saint of Andorra.

Founded by French colonists in 1919, this mountain resort has been transformed into one-of-a-kind theme park.

This gate served as a small lock-up jail in the 14th century.

The world's first fully-fenced urban ecosanctuary is a haven for New Zealand's rare and endangered species.

A 30-foot-high stream of chocolate flows continuously at the Lindt Home of Chocolate.

This former cigarette factory was built in a style inspired by Islamic architecture.

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

The remains of Crystal Palace Great Exhibition of 1851.