This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

360-degree virtual reality chamber physically immerses scientists into their data.

Inky sludge oozes to the surface of this beach thanks to a rare natural tar seep.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Olfactory delights in San Francisco's Botanical Gardens.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

A heavenly experience, right here on Terra Firma.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

A beautiful geyser under environmental threat.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

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

The first declared National Monument in the United States.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Continuing the tradition of the dime museum in style.

The seamy, underground secrets of Portland's criminal past.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

The old Niles Canyon Aqueduct in the San Francisco Bay Area is a bemusing and secret trail through nature for wayward travelers.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.