Legend says train robbers stashed their gold within the depths of this unusual cave.

A colony of Mexican free-tailed bats live under the bridge and take flight at sundown all summer long.

A reproduction of earth's many biomes.

This historic collection of Native Alaskan artifacts was resurrected through a partnership between the WPA and tribal artisans.

One of two side-by-side totem pole parks dedicated to educating visitors on Tlingit history and culture.

A giant Troll lurks under one of Seattle's oldest bridges.

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

A wall of chewing gum moonlights as collective art.

This working class sculpture pounds his hammer all the livelong day.

A walk through the historic city center, under the streets of Seattle.

This bomb shelter-themed bar has barely changed since it opened.

The world's largest public collection of PEZ memorabilia.

The Magical World of George Phar Legler.

Religious statues built because of one man's bargain with God fill this peaceful sculpture garden.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

A rare wayfinding portmanteau of “Street” and “Avenue.”

Despite a recent paint job, the factory still sits empty.

This lovely hilltop tower was specifically built to withstand 100 MPH winds.