Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

Mysterious rocks that ring musically when struck.

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

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

Narrow gorges and deep pools created by long-ago glaciers.