A mysterious inscription may hold a clue about the "Lost Colony" of Roanoke.

The ruins of a cotton mill that was burned in the Civil War are still hidden in a Georgia forest.

One man's ambition created this psychedelic log home.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

A mysterious castle built as a monument to lost love.

An entire city block built completely out of petrified wood.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

This grand gothic brewery has been pumping out suds for over a hundred years.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

Home to items never before seen by the public.

A wartime promise becomes a shrine to Our Lady of Lourdes.

A singular collection of hand-built art deco cars are held in a building with style to match.

The world's largest anatomically accurate brain sculpture.

The farm where one of America's greatest leaders was raised is now a well-appointed landmark.

Get a taste of the Wild West and a glimpse into the gold rush in Goldfield's oldest continually-running business.

Monasteries on rock pillars, once accessible only by frayed ropes.

Japan's largest collection of Western-style mansions in the port city of Kobe includes a recreation of Sherlock Holmes' 221B Baker Street quarters.

The iconic castle that withstood a magnitude 6.2 earthquake has become a symbol of resilience.

A Japanese corporation has turned this small island town into living modern art gallery.

Starship-temple contains 400 tons of drinking water and offers free Japanese lessons.

This neighborhood thoroughfare is haunted by dozens of homemade monsters.

Experience park where visitors are told to expect the unexpected.