Elevated freight railway turned wildly successful urban park.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

One of the deadliest American air disasters is nearly forgotten in Brooklyn.

Victorian "Fancy Craft" Hair Wreaths and Relics.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Towering basalt columns, a creation of fire and ice.