The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

The world's largest collection of ticks.

This angular brutalist playground turns playtime into modern art time.

The first park built over a freeway is a brutalist masterwork.

San Franciscans leave gifts and messages for the magical beings that live behind the tiny, mysterious door installed on a tree in Golden Gate Park.

360-degree virtual reality chamber physically immerses scientists into their data.

Smooth basaltic rocks tell a tale of ancient glacial waterfalls.

Symbolic attempt to overcome the issues of life.

A home made entirely from scrapped, reclaimed and recycled material in Whitman County, Washington.

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

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

An architecturally-focused antique shop.

A volcanic fissure over two miles long and up to 70 feet deep.

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

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

Silver in the hills led to the speedy creation of this boom town and a lack of it saw the town abandoned nearly as quickly.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

Massive crater in central Oregon.

A place of great reverence for Trekkies everywhere, a hero's future birthplace.

35,000 grape hyacinths flow like water down a garden hill.

The kind of mixed-up place that drives archaeologists crazy.

A meditative space out of a fantasy story.

The remnants of an early American attempt at missile defense.