An outdoor urban gallery of large-scale artworks by the world's most influential street artists.

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

Monumental sculptures of Patrick Amiot, constructed from debris, detritus, and determination.

Seven ceramic sculptures are scattered around this California college campus.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

This Prescott institution is widely considered the oldest bar in Arizona.

A spiritual vortex among the red rocks in Sedona.

Ancient pueblos built into the base of a natural canyon wall.

The rocks exposed at Valley of Fire State Park also occur in a much less known but equally spectacular area a few miles to the southwest.

Named after an outlaw who used the basin as a hideout.

The drama of nature in full effect in this Nevada State Park.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

This geothermal hot spring hides beneath a slowly growing mineral dome.

The residents at this Yellowstone wildlife park will certify your cooler as "bear-proof."

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

Home to an endangered salamander, a full moon celebration, and a large spring-fed outdoor swimming pool.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Interactive museum complete with costumed re-enactors and the only known surviving chest from the Boston Tea Party.

A Lovecraftian altar of nightmarish bronze chairs sits ominously on a boardwalk in Puerto Vallarta.

San Francisco's newly reopened hands-on science museum.

A collection of 20th-century automata, penny arcade games, and musical contraptions.