See massive fossils that are over 200 million years old in northeastern Arizona.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Rippling sand dunes frozen in the Arizona rock.

A daily replay of the experiment that proved the rotation of the Earth.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

This small and serene place for quiet reflection on Staten Island was built in China based on the gardens of the Ming Dynasty.