More than 5,000 contemporary and "historic" mustards from around the world.

Millions of dollars worth of sculpture decorate this Iowa city center.

Architectural elements and building materials for this house were transported from Salisbury, England.

Collection of over 1,000 rare and vintage bicycles.

Victorian-era Egyptomania left its mark on this Nashville landmark.

When Motown musicians came to Nashville in the 1960s they stayed at this historic record-pressing company because hotels wouldn't host them.

Located inside a former bread factory, this museum explores a century of transportation history through innovations that were extraordinary or failures—sometimes both.

An exotic wildlife habitat right off The Strip.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

This Las Vegas casino boasts one of only three spiral escalators in the United States—an engineering wonder.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

Experience a charming 1930s version of "infotainment."

The only road through the heart of Glacier National Park.

The first declared National Monument in the United States.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

These dramatic cola-colored falls have appeared in a poem by Henry Wadsworth Longfellow and a song by Sufjan Stevens.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

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

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

Enormous photography collection housed in a study center co-founded by Ansel Adams.

Browse an impressive collection of passenger and military aircraft dating back to World War II.