This abandoned horse racing track was an exercise in hubris from its inception.

The prototype for all Nazi concentration camps.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

A spiritual vortex among the red rocks in Sedona.

A geological mystery on Camelback Mountain.

Memorializing an American tragedy of massive proportions.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant