A Florida college boasts the world's largest single-site collection of structures designed by Frank Lloyd Wright.

A failed, un-built suburb that has been going feral for decades.

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

One of many gator theme parks, abandoned in the sugar fields of South Florida.

Grab a slice of pizza next to the remains of the "human monkey" who ran for mayor.

A mysterious castle built as a monument to lost love.

An underwater city for the dead.

This glass-stain Mary attracted thousands of pilgrims until her head was shattered by a vandal with a slingshot.

"Bite or Smite" became the unlikely mascot of a Tampa suburb.

The giant squid's 27-foot-long corpse lies preserved within a Sarasota aquarium.

Formerly secret, precariously perched boulders.

This massive mushroom has spent centuries eating its way across a huge swath of Oregon.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

This frequently-photographed waterfall takes only a short hike to visit.

The seamy, underground secrets of Portland's criminal past.

Yes, this monument is aware that it is about 20 miles away from the actual center of the United States.

A roadside collection of over-sized iron creations that are a bit more macabre than most.

The face of a woman pushes its way through the earth.

A hollow cement depiction of time's inexorable effect on the human body.

Faces carved into the cliffs create an otherworldly walking trail.

Stroll through a wonderland of stupendous moss-covered trees.

Steep canyon walls hide a forested oasis in the West Texas desert.

An apocalyptic seismic event creates a deadly chain reaction that ends with a 6-mile long lake developing within weeks.

This giant iron playfully pays tribute to an early 20th-century architectural trend.