This defunct, fortress-like prison has been the setting for several movies.

A restored, one-room African-American schoolhouse in the diva's hometown now preserves the legacy of its most famous student.

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

You have to love a museum with a truly dedicated focus. A focus on Superman, for example.

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

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

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

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

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

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

This memorial plaque remembers a strangely shallow maritime disaster known as "Chicago's Titanic."

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

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

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

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

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

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

Colorful murals by Jean Cocteau hide within this peaceful London sanctuary.

The arching stretch of London's longest street holds many reminders of the area's maritime past.

Soon after its unveiling, this giant inverted globe sparked controversy and was vandalized.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."