Don't be a grizzly man. Get personal with Alaska's wild bears from the safety of this conservationist camp.

One of the world's largest telescopes, stares into the night sky with two huge mirrors.

A Tucson museum and performance space full of found-object movable sculptures.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

Don't blink or you'll miss it.

The world's largest military aircraft cemetery.

A working cattle ranch with remarkably well-preserved prehistoric petroglyphs and ancient ruins.

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

A reproduction of earth's many biomes.

A self-built castle made by a mysterious man.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

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

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

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

Most-visited and most-photographed slot canyon in the American Southwest.

Rippling sand dunes frozen in the Arizona rock.

A museum devoted entirely to hammers has more than 1,400 items on display dating back to the Romans.

A morbid gateway to an Alaska town prides itself on the hunting history it represents.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

Internationally recognized group that works to protect the wolf and educate the public about its plight.

Massive mounds of golden sand look like a desert landscape randomly plopped in an Arctic forest.

While not recognized by Guinness, this chocolate waterfall is likely to be the world's largest.