World's largest magnetic research facility.

The ruins of a creative scholar's fantastical unfinished sanctuary act as his massive gravestone.

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

A former hospital is now home to a pizza parlor and maybe a few ghosts.

The ruins of a Florida miracle spring resort make it seem like a wonder that this was ever a health spa.

Former villa and estate of James Deering developed to preserve native tropical forests.

It's a pretty creepy lock-up.

In Florida, these naughty monkeys live on their own mini-monkey Alcatraz.

A luxuriant botanical garden below sea level.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

An optical illusion found amid a logged redwood forest.

A storybook European village in Berkeley.

The largest drain hole in the world.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.