A black and white mural stands out from its psychedelic surroundings.

From pre-war whiskey cocktails to prohibition-era speakeasy secrecy, this bar has seen it all.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Elevated freight railway turned wildly successful urban park.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

A sculpture for the sun and stars, created by Nancy Holt.

A Mars simulation in the southern Utah desert.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

Acres of natural wonders left behind by a socialite-turned-gardener.

100 massive sculptures in the Hudson River Valley.

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

A desert that evokes the surreal.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.