A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Forget Hollywood, one of the biggest stars in the world can be found in Roanoke, Virginia.

Go inside to really appreciate this 500-year-old technological masterpiece.

Home to items never before seen by the public.

At 207 feet, one of the world's longest continuous escalators.

Inspired by a foil-wrapped potato, (seriously) the Markel Building has been deemed one of the 10 ugliest buildings in the world.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

The capital of the Cayman Islands is a center of offshore banking, but gets battered by blistering hurricanes.

The fairy tale castle of the "fairy-tale king."

The prototype for all Nazi concentration camps.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The glowing blue Nymphaeum of Emperor Tiberius.

Da Vinci's equestrian statue, 500 years in the making.

Traditional 11th-century outdoor tannery.

A monument celebrating the idea of reaching inaccessible places.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

Vast stretch of tide-pools with a unique Moroccan charm.