Unique tower has outlasted a takeover of the company.

Kentucky, Tennessee, and Virginia meet at this point in the Cumberland Gap.

The world's longest known cave system.

Despite its name, this fast food museum is actually a replica of the ninth McDonald's store.

Hot Doug's "Hot Dog" Stand.

One of the finest examples of a black soil prairie that was barely saved by the Great Depression.

Twice a year, this road is closed off to allow for the migration of thousands of snakes, reptiles and amphibians between cliffs and a swamp.

At the largest railway museum in the United States, you can see everything from an early steam engine to a functioning Thomas the Tank Engine.

The sign to a demolished amusement park now stands in front of a local library.

The lowest point in the state of Illinois, at the confluence of the Mississippi and Ohio rivers.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

The famous Beatle secretly visited this Illinois town several times to visit his sister.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

Huge abstract sculptures of the Puerto Rican Flag.

This monolithic statue was erected in honor of Chief Black Hawk (even if it wasn't made to look like him).

This historic Illinois "Muffler Man" has been converted from axe-touting lumberjack to rocket-wielding space ace.

The clothes-washing king doubles as a community center with some unusual features, including an aviary filled with finches.

It was originally part of a "terrible lizards" collection at the 1964 New York World’s Fair.

A towering Art Deco movie palace made to look like a Mayan temple.

This folk art wall claims to be the world's one and only memorial to the bygone age of hippies.

An abandoned observatory in the middle of the Illinois prairie.

The hometown of Popeye's creator is littered with a growing collection of granite cartoon characters.

Illegal drag racing two stories beneath Chicago’s streets.

This urban drawbridge gained eternal pop culture fame when the Blues Brothers jumped it while it was raised.