"X" marks the spot of an echo chamber in the middle of a plaza.

This kitschy tavern is also home to rare early editions of "Treasure Island."

A statue honoring 44 continuous years of greeting passing ships.

A monument to one of the few Olympic flames ever to be lit outside of the host city.

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

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

The palatial McDonald's that inspired Wesley Willis.

This museum celebrating the almighty dollar lets visitors literally stand in the shadow of a million bucks.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

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

The last masonry skyscraper ever built reveals a transitional moment in architectural history.

A hot dog stand where the heads are just as hot as the dogs.

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

An outdoor urban gallery of large-scale artworks by the world's most influential street artists.

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

A journey begins with a single step, and for many, the road-trip of a lifetime started at this Chicago intersection.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

This long unused shot tower on the Mississippi remains a point of pride for a small city in Iowa.

This baseball diamond was home to the Rockford Peaches, a team featured in the hit film "A League of Their Own."

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

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

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.