The remains of a failed canal can be found in several towns near Lake St. Clair and is known historically as "Mason's Folly."

This historic suspension bridge is one of three remaining swinging bridges in Michigan, and one of the few swinging bridges left in North America.

Over 60 chemical plants and oil refineries sit in a 15-mile-wide section outside town.

The highest point in Delaware is located under a trailer so this marker across the street will have to do.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

The oldest active church in Pennsylvania is also the second oldest Swedish Church in the United States.

One-of-a-kind preserved ruins of an abandoned 1880s church in Chicago's Pilsen neighborhood.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

More than 8,000 drinking jugs say “Cheers!” to a guy named Toby.

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

Weighing 30,000 pounds, this monument represents Detroit's first industrial era.

A strange house built only at night, with rumored mystic inspiration.

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

The oldest U.S. Government building in California, and it's State Historic Landmark #1.

The first safe in this California town had to hold all the gold.