A crumbling staircase in upper Manhattan is all that remains of one of the most important sites in sports history.

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

A tribute to Samuel Wilson, who may be the original "Uncle Sam."

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

Massive still life just off the highway in Kansas.

This lesser-known geographic marker was the reference point for all surveys of the continent for 75 years.

It's big, it's a ball, and it's made of twine—the world's largest of its kind.

Enjoy a tour of oddities and makeshift monsters at this souvenir store with an offbeat sense of humor.

A wonderful collection of all things Oz is nestled in the heart of Kansas.

A rainbow-colored house promotes LGBTQ rights across the street from the Westboro Baptist Church.

A collection of soda memorabilia that spans decades.

A frog crossed this road, but whether it made it to the other side remains a mystery.

A commemoration of over 150 of St. Louis's favorite sons and daughters.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

This is not your typical jungle gym.

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

The world's largest collection of the world's largest objects is in one small Illinois town.

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.

The inconspicuous grave of the University of Illinois' first president is just steps from the main quadrangle.

The house is an iconic pilgrimage site for fans of the Illinois-based emo band.

An actor's tribute to a former mentor.

The oldest bibliophilia club in America, with exhibitions on historic books and graphic arts.

Two large-scale sculptures of Adam and Eve greet visitors in the nude at the Time Warner Center in NYC.