The concrete shell of an industry giant remains as a playground for graffiti artists, auto scrappers, and paintball warriors.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

Detroit’s downtown castle is one of the oldest structures in the city.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

Memorializing an American tragedy of massive proportions.

Steepest flood safety railway in the entire world.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

The only remnant of a small mining town is an abandoned railroad tunnel that is steeped in ghostly lore.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

The world's tallest doric column is this Ohio monument to a naval victory in the War of 1812.

This alley-cum-fan gallery in the ex-Nirvana drummer's hometown holds the world's largest drumsticks.

The site of Neil Armstrong's first flight is marked by a full on replica of the moon landers.

Memorials and tributes scattered across the university grounds remember a famous national tragedy of the Nixon era.

The tragic reality of a town riddled with rumors of haunts, chemical spills, and serial killers.

Landmark dedicated to the plight of the American Indian in the 21st century.

The only presidential monument to display a late POTUS's actual casket.

The angel of death appears to weep black tears at this grave marker.

Medical history museum featuring a lovely doctor's office from the 1800s.

The heroic sled dog of the 1925 serum run is preserved in taxidermy.

Unique collection containing a wide and curious range of contraceptive items.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

Marvel at this turn-of-the-century masterpiece that has been turned into a rather stately supermarket.

A starship has landed in Texas, a welcome break for weary travelers from a drab stretch of I-35.