One of Frank Lloyd Wright's greatest—and favorite—architectural masterpieces was almost lost.

This unique crypt designed by Frank Lloyd Wright for his longtime friend was not completed in either man's lifetime.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

The ruins of this ancient fortification wall sit in the middle of a quiet, residential intersection.

More than a century after her death, Little Gracie Watson remains one of Savannah's most often-visited residents.

This museum preserves over-the-top masterpieces that once qualified artisans for membership into a medieval guild.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

This enormous World War II relic is one of the largest wooden structures in the world.

The so-called "Bridge of Thighs" in Palm Springs allows nudists to discreetly cross the road.

A music-filled, booze-soaked oasis in the desert.

A fake town founded by Western movie stars is now becoming a hip desert community.

This beloved roadside attraction welcomes visitors with his signature neon smile.

This tiny square mile of Canadian sand was once considered the world's smallest desert.

This natural wonder is disappearing at an alarming rate.

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

Few other hotels can rival the grandeur of the Castle in the Rockies.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

The site of Paul Revere's historic two lantern warning.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

A massive Montreal stadium that has seen nothing but trouble since its inception.

A contemporary fresco movement illustrates the region's rich history.

This steep cable railway has been hoisting passengers in the heart of Québec City for over a century.