This replica of the Greek structure is in the heart of Nashville.

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

The park that the Chicago Stockyards built.

You were once able to challenge a chicken to tic-tac-toe at this park, which is now converted into the Aikman Wildlife Adventure.

Fragments of a massive unfinished sculpture sit near the main quad of the University of Illinois.

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

An Art Deco gem that held together the artistic heart of an agricultural community for 92 years.

First planned industrial community in the United States.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

A hollow cement depiction of time's inexorable effect on the human body.

A source of civic pride, though the reason for its construction is unknown.

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

A lush green oasis in the middle of Chicago.

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.

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

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

This historic hotel invented the chocolate brownie.

A gothic church spire sits atop this skyscraper, the tallest church in the world.

Hidden on the 7th floor of a historic building, this Cajun spot features wall-to-wall bottles of hot sauce.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.