The oldest experimental corn field in America is still creating better ways to grow crops.

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

One of two identical monuments marking the sites of military training encampments in Peoria, Illinois.

These Depression-era WPA sculptures have made a couple of stops over the years.

Once known as the Illinois Asylum for the Incurable Insane.

Shop of curiosities with a dinosaur museum tucked in its basement.

A historic beacon built in the aftermath of the worst maritime disaster on the Great Lakes.

The murals have transformed a residential alley into a vibrant drive-through gallery.

A Bibliophile's Dream.

A 30-year-old Sycamore tree grown from a seed taken to the moon and back.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

A collection of 11 million buttons illustrates the human toll of the Holocaust.

The world's third-largest scale model of the planets.

This rare female version of the Muffler Man has its clothes removed each summer to signal the start of pool season.