A Beaux-Arts triumph set to become Ford's innovation campus

These grassy undulations on a stretch of University of Michigan campus aren't bad landscaping, they're art.

Trade in that pesky human soul for cold-hard circuits.

An ever-evolving wall of graffiti art off East Liberty Street.

The city is full of whimsical portals to another world.

The stoutest tree in the world.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

High atop a Mexican rainforest mountain, this ancient pyramid once drew pilgrims countries away.

A jewel of the Mexico city skyline now slowly crumbles after surviving an earthquake.

The only castle in North America to ever house European sovereigns.

66,000 pieces of art, donated by one of the world's richest men.

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

An authentic replica of an Asian temple and garden hidden amongst the natural beauty of Hawai'i.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

Some North Carolina Cherokee have been keeping their history alive for decades with a single play.

Who needs fancy modern water slides when this giant North Carolina rock works just as well?

These eerie outliers of the lightning bug family glow a mysterious blue color.

An unfinished rail tunnel that has since been used to house cheese and bats.

This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

Site of a former hidden treehouse in New Orleans.

This float factory takes the mask off of Mardi Gras and lets visitors see where the magic happens.