Rare recess caves fill this unbelievably beautiful Ohio park.

This spectacular track has run continuously since 1882.

This family driveway also serves as the highest point in Illinois.

This botanical garden outside Chicago boasts an array of more than 300 varieties of lilacs.

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

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

There are eight natural springs around town, each with a slightly different taste.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

An impressive collection of over 50,000 minerals including moon rock from the Apollo 17 mission.

The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.

This hot dog-shaped diner has moved all around Colorado, never been to New York.

The remains of the dam that unleashed a 15-foot wall of water on Denver.

Travel through the wholesome amusements of yesteryear at this charming miniature village.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

Silver in the hills led to the speedy creation of this boom town and a lack of it saw the town abandoned nearly as quickly.

The largest source of fossilized insects anywhere.

The highest bridge in America was built for an almost unnervingly small amount of money.

When ecosystems collide in the arid Southwest.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

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

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.