These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

An emerald-green grotto just a short trip from Austin.

On the Oregon coast there is a natural hole that seems to be draining the sea.

Most-visited and most-photographed slot canyon in the American Southwest.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Rippling sand dunes frozen in the Arizona rock.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

A huge musical instrument played by the ocean.

Barely visible foundations remain where Stow Lake’s “observatory” once welcomed visitors.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

San Franciscans leave gifts and messages for the magical beings that live behind the tiny, mysterious door installed on a tree in Golden Gate Park.

A pair of mutilated bronze octopuses slump at the base of the monument honoring California's admission to the U.S.

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

Over 315,000 preserved amphibians and reptiles in jars.

A walk down memory lane in the heart of one of San Francisco's most notorious neighborhoods.

Olfactory delights in San Francisco's Botanical Gardens.

The stones that traveled from Spain to eventually become a holy place for San Francisco's nature worshippers.

San Francisco’s century-old Christmas Tree.

Join the circus for a few lessons to learn clowning, acrobatics, and Chinese contortion.

Bonsai garden in Oakland is curated by the first non-Japanese female bonsai master in the United States.

A 140-year-old castle with underground caves hidden in San Francisco.