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

The legacy of an unsolved, gruesome murder rests beneath the spans of this historic bridge.

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

Giant granite rocks standing end-to-end like a train of circus elephants.

Collection of skeletal systems from the "world's leading supplier of osteological specimens."

A Victorian mansion, painstakingly reproduced to appear just as the the Munster's family home did on TV.

One part antique store, one part curiosities hodge-podge.

Continuing the tradition of the dime museum in style.

This sacred cavern, 400 feet deep, is home to millions of bats and an ancient burial ground.

An emerald-green grotto just a short trip from Austin.

DIY collection of eclectic holdings.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

It specializes in outsider art and artifacts of secret societies.

A modernist landscape of water and sci-fi concrete.

The largest land animal skull ever discovered.

A funhouse dummy that turned out to be a real life mummy, Elmer McCurdy is an urban legend come true.

An acoustic anomaly with a mysterious cause.

Bronze statue marks the spinach capital of the world.

Town not known for anything except its strange name.

Annual Easter display made up of thousands of hand-painted eggs.

Deep scars on the earth left by the Ice Age.

Turnip-shaped island just off the Michigan shore in Lake Huron.

Unique Michigan homes look like something out of Tolkien's "The Lord of the Rings."

Ancient petroglyphs discovered only after a massive fire swept across Michigan in the 1880s.