When John Muir and Teddy Roosevelt spent three nights in Yosemite, it would soon pave the way for a National Park Service.

Yellowstone became the world's first national park on March 1, 1872, when the Yellowstone National Park Protection Act was signed into law.

For millennia, Stonehenge has amazed and confounded visitors and archaeologists alike. What is it for? How as it built? And why?

Frédéric Auguste Bartholdi was on the cutting edge of a new construction technique while constructing the Statue of Liberty.