Before he was America’s most famous preservationist, John Muir was an ingenious mechanical inventor.

A largely forgotten and touching neoclassical marble fountain overlooking a bear mound effigy.

Where experiments are conducted on all things wood.

The final resting place of one of Thomas Jefferson's formerly enslaved sons.

Three playfully immersive mini golf courses let you travel alongside your ball to the cup at this facility, which has been around since the 1950s.

Software company Epic Systems has created one of the strangest and largest workplaces of all time.

More than 5,000 contemporary and "historic" mustards from around the world.

A stone marker memorializes the spot where the King broke up a street fight with a classic karate stance.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.