Once adorning a New York skyscraper, these reclaimed ruins now haunt an Indiana park.

A waterfall 600 ft. inside a mountain, once the bane of gold miners, is now a spectacle of nature.

An Aladdin's cave of old Silicon Valley tech.

Successful artist residence program has filled this ranch with dozens of sculptures over the years.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

Home to the "Circus" trees created by Axel Erlandson.

Hopeless romantics will swoon over the sweet story behind this bright and colorful home.

From the sky, a kaleidoscope of color brightens the grey landscape of the San Francisco Bay.

A trail weaves through the verses of a poem illustrated by stone sculptures inspired by Native American pictographs.

The old Niles Canyon Aqueduct in the San Francisco Bay Area is a bemusing and secret trail through nature for wayward travelers.

The perfect spot for a picnic, right next to a giant ballistic missile.

Across Ring Mountain is a vast collection of Native American petroglyphs unique to the region.

Of all the origin stories for weed's secret code, this one likely has the goods.

Frank Lloyd Wright died a year before construction on his largest public project even began.

George Lucas donated this park to honor the birthplace of his two biggest movie franchises.

A tribute to the life and work of the beloved "Peanuts" cartoonist.

Nursery with extensive collection of flesh-eating plants operated by the author of "The Savage Garden."

Monumental sculptures of Patrick Amiot, constructed from debris, detritus, and determination.

340 bicycles, 65 feet high.

This collection of hand fans doubles as a history of femininity.

This museum boasts the ninth-largest collection of insects in North America.

Seven ceramic sculptures are scattered around this California college campus.

Outsider art or homage to aliens?

Each summer, the migratory bats living beneath the bypass form "batnadoes" at dusk.