The former home of the man whose radical ideas changed the nation.

The first (but not only) upside-down house in Germany.

A collection of huge Pre-Colombian structures in Alabama.

A beacon atop a downtown building provides Bostonians with weather forecasts and baseball news.

A ruined castle stands atop a hill surrounded by dragon lore.

The apartment where Pippi Longstocking came to life.

Where a railroad loops under or over itself to rise or drop more than 70 feet in a short distance.

A tiny town hall—in Sweden's one-time capital—might be the smallest in Europe.

This town is home to the world’s largest arch constructed entirely of elk antlers.

This small shop walked so America could run on Dunkin'.

The world's largest underground iron ore mine.

Hitler's bleak vision of relaxation still stands as a mostly abandoned 10,000-room resort complex.

The NASA scientists behind Apollo 11 started out developing Nazi weapons at this abandoned German rocket factory.

A city's controversial tribute to its founder depicts townspeople flashing their bare behinds.

Twelve sweet, nutty, life-sized statues are housed in this second-story shrine to almond paste.

The sprawling, eccentric estate of Ames and Ames, a brilliant botanist, and a genius inventor and artist.

This 23-foot-tall bear stands amid the hustle and bustle of Hamad International Airport.

Qatar's oldest market can trace its origins back more than a century.

The building is a gigantic piece of art inspired by the shape of a desert rose.

A symbol of Islam in oil-rich Brunei.

Ferdinand Magellan dubbed the world's largest water village the "Venice of the East."

This surprising museum tells the story of modern Malaysia through the history of its law enforcement.

Once the private home of China’s most legendary tycoon, getting inside this stunning mansion no longer requires an elite pedigree or acts of daring.

The largest tea plantation in Southeast Asia supplies gorgeous vistas alongside tea for the surrounding countries.