This amazingly preserved Gold Rush town is a historian's dream.

Instead of becoming a power plant, this abandoned complex became a massive letdown.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

The beauty of urban decay, hiding some dark secrets.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

Abandoned businesses, homes, and rusted cars are all that remains of this stopover town.

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

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

The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

The ruins of a Florida miracle spring resort make it seem like a wonder that this was ever a health spa.

A once-luxurious, now abandoned hotel in the Italian Alps.

An eccentric priest's tribute to George Washington, this chapel tells the story of the American Revolution.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

A remarkable lava formation encloses a line of Buddhist statues that can't be accurately counted, according to local mythology.

This trail follows unique stone railroad tracks and a historic waterway to the south coast of Devon.

Walk a trail through a historic Quaker town that outlawed slavery in 1777 and was a major waypoint on the Underground Railroad.

The longest non-mortared wall in the country is one man's tribute to his displaced Yuchi ancestor's five-year journey to her homeland.

A dictator's failed public works project has been reborn as two linked trails through spectacular scenery.

Mysterious rocks that ring musically when struck.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

Possibly the world's oldest rug, this Egyptian relic is woven entirely from ancient cat hair and once carried a mummified human foot.

The graves in Florida's oldest Black cemeteries are marked with shells, stones, and mementos of the deceased.

A lone gunner's station is all that remains of a replica Spanish Fort in Florida.