Watch the ships come in on Michigan's 210 ft. high observation deck in Sault Ste. Marie.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

This bridge was constructed from the remains of the first Ferris wheel.

Also known as the Cathedral of the Plains, this church holds the distinction of being one of the "8 Wonders of Kansas."

A tunnel with windows, so you don't miss out on the impressive views.

The unusual patterns in this rock formation result from two distinct modes of weathering.

Once a dining hall for boarding school students, this lodge was a popular haunt for nuclear physicists working on the Manhattan Project.

The oldest continuously occupied public building in the United States.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.

A hotel with a rich Wild West history of miners and bootleggers.

The graffiti-covered ruins of an abandoned trading post in the middle of the Navajo Nation.

This opulent Pueblo Deco movie palace melds Art Deco and Native American motifs.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

These elusive, isolated rodents evolved into a distinct, locally iconic subspecies.

This picturesque archeological site looks like it was pulled straight from a fantasy novel.

This Shetland Islands bus shelter may be small, but it squeezes in a couch, a desk, some art, and even an old telly.

The decaying ruins of a failed mining company’s water diversion project cling to the side of a desert canyon.

The remnants of the base where US Army troops learned how to fight in extreme conditions.

At the time of its completion, it was the tallest dam in the world.

A remote sandstone plateau named for a legendary cattle rustler.

This interpretive path lets you get up close and personal with dinosaur bones.

A natural formation that resembles a camel resting in the New Mexico desert.

This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.