Quite simply the largest tree in the world (by volume).

A spiritual vortex among the red rocks in Sedona.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Golden Gate Park's historic collection of plants.

This historic hotel invented the chocolate brownie.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

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

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Neoclassical Revival mansion and set of horror cult classic Phantasm.