This bridge is haunted by the ghost of a distraught mother.

One of the largest underground systems runs under Canada's largest urban center.

A collection of more than 12,000 shoes, displayed in a building shaped like a shoebox.

Nonprofit art center that promotes outsider, intuitive, and self-taught art.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

Hundreds of protractors affixed to surfaces all over the city.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

These disused steel furnaces are now haunting ruins that may one day be a national park.

This church in Pittsburgh is home to the largest collection of religious relics in North America.

Mutant vegetables, transgenic mosquitos, and atomic rodents span the walls of this one-of-a-kind museum.

A collection of unique outdoor sculptures surounded by the beauty of nature.

Memorializing an American tragedy of massive proportions.

Beyond the usual stories that attend old prisons, this one has deep bloody undercurrents.

Despite its lavish ornamentation, and wholesome lifestyle of its devotees, this mountain commune has faced its share of issues.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

A museum dedicated to exhibiting remarkable outsider art.

An "anarchical" no man's land, complete with garbage sculptures and a hobo-run "Landfillian Library."

Macabre astrological automaton clock dating to the late 1400s.

Where a staggering 747 ships were constructed during World War II.