This old residential building was once the largest flour mill in the world.

The only arched bridge made of stone on the entire Mississippi River.

This landmark honoring a local beer brand is an iconic part of the Minneapolis skyline.

A bronze statue on a downtown corner honors Minneapolis's favorite career gal.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

Ever wanted to can Spam?

The Iowa state contender for largest pan in the world oddly only comes in second or so.

One of just a few cities in the world to base their center of government on an island. Others: Paris and Osaka.

A place of great reverence for Trekkies everywhere, a hero's future birthplace.

The ghost town that ended up on Ebay.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

A sharp bend in a dramatic river canyon cut through red rocks.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

More than a century old, this trading post resides in the Navajo Nation.

This historic national park is covered in the stunning ruins of red rock pueblos.

Ancient pueblos built into the base of a natural canyon wall.

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

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

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

This rusted car found in Petrified Forest National Park's Route 66 exhibit may be the most photographed abandoned car in the country.

A small car graveyard sits in the shadow of the famous Cadillac Ranch.

This water tower slanted at an uncomfortable angle off the old Route 66 was an ingenious marketing ploy.