The fastest mail service in the west is tracked and memorialized along this 1,400 mile trail.

A celebration of the animation wizard's childhood home and antique railroad memorabilia collection.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

A sculpture of a giant man escaping from the depths of the Earth.

Entombed in this strange, white stone hill are the deadly remains of radioactive weapons production.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

This abandoned prison castle has become an imposing gallery of graffiti art.

This abandoned Abraham Lincoln statue has also earned the honorary of "World's Ugliest."

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

A display of magnificent stained glass windows is the first exhibit of its kind.

The palatial McDonald's that inspired Wesley Willis.

The last remaining vestige of a popular 1999 public art display.

The oldest operating hotel in Illinois enjoys a historic (and some say haunted) past.

Dozens of large steel sculptures fill this two-acre park outside a former blacksmith's studio.

The oldest house in Galena, Illinois, now is a reminder of when this city was the world's lead mining capital.

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

The original vault that held the president's remains still stands, empty, not far from where he was finally buried.

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

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

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

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

A historic beacon built in the aftermath of the worst maritime disaster on the Great Lakes.