Yo, Adrian!

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

The Cold War-era "underground Pentagon" is a sprawling subterranean hideaway for the Defense Department.

A Memphis park where you can walk the whole Mississippi River in one go.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

A ceramic-tiled room at the Seelbach Hotel said to have secret tunnels used by Al Capone and a crowd that helped inspire F. Scott Fitzgerald's 'The Great Gatsby.'

This shale formation along the Appalachian Trail once inspired the third president of the United States.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Time travel with sweets across history at this research-based candy store.

Ever wanted to can Spam?

In 2004, a Dave Matthews Band tour bus dumped 800 pounds of waste off a bridge and onto an unsuspecting tour boat below.

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

These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

This abstract sculpture is rumored to cast a hammer-and-sickle shadow once a year.

Illegal drag racing two stories beneath Chicago’s streets.

This historic-shipwreck-cum-diving-spot can still be seen poking its boiler out of the Lake Michigan waters that claimed it.

Home to a protest movement, a bombing, and a dramatic change in labor history.

These pretty kitties killed and ate as many as 135 railway workers.

This historic hotel invented the chocolate brownie.

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

Inspired by a piece of concrete, these three pyramid-shaped buildings have been beloved Indianapolis landmarks for over 50 years.

More than 7,000 gallons of water pour over these cascading red quartzite waterfalls every second.

A fitting attraction for the corn capital of the world.

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