Stairs often replace streets on the steep slopes of this old mining town.

A strenuous, unofficial trail leads to spectacular views in one of America's most remote national monuments.

A living museum of curated gardens honors 4,000 years of agriculture in the Santa Cruz River basin.

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

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

One of the largest trees of its kind in California.

A working cattle ranch with remarkably well-preserved prehistoric petroglyphs and ancient ruins.

The world's last remaining store of its kind.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

Three hundred years of preserved Spanish colonial history in San Antonio.

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

This historic hotel invented the chocolate brownie.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

These pretty kitties killed and ate as many as 135 railway workers.

This shale formation along the Appalachian Trail once inspired the third president of the United States.

Built in the 1850s, this church was of the first five churches constructed in Harper's Ferry.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

The collection of signage remembers the midcentury pushback against the new neon light.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

This expansive bridge in the Canadian wilderness was originally just built for friends.