Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

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

A layered tribute to the work of mosaicist Isaiah Zagar.

Mysterious rocks that ring musically when struck.

Odd outsider art installations surround a Gold Rush-era ghost town.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

The ghostly remains of an accidental sea.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

The rocks in this arid basin leave trails of movement behind them.

An artsy hidden staircase leads to breathtaking views of San Francisco.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.