Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

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

A fitting attraction for the corn capital of the world.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

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

Largest tulip festival in America, includes fireworks, a parade, and a carnival.

Week-long festival in the baby food capital of the world.

With over 5,000 champions, the Hall of Fame continues to draw amateur eaters.

A 70,000-square-foot institution dedicated to a very literal, creationist perspective on the Book of Genesis.

A rapidly disappearing authentic bit of the old south.

First established in 1696, this settlement was abandoned after the Revolutionary War.

Tour the oldest unrestored plantation house in America that is open to the public.

This recently rediscovered Civil War-era submarine was the first to ever sink an enemy ship.

One of the oldest living oak trees in the Southeast.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

Astronomical observatory above Lake Titicaca.