The trunks of 3,000 year-old trees lurk beneath the surface of this crystal clear lake in Oregon.

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

A Roman calendar dating to the first century is tucked away in a small town alley.

World's only nuclear reactor operated by liberal arts undergraduates.

Here, cows that make vodka are treated like celebrities.

There's something big lurking beneath the surface of this tiny Oregon park.

A faux European lane smack dab in downtown L.A.

The legendary building that needed ghostly approval before being built.

A common entry point to the Griffith Observatory trail holds its own wonders.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

This childhood throwback has hundreds of arcade games and pinball machines to transport you back in time.

The sun acts as a key that only fits this giant keyhole twice a year.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

A giant donut stands as a popular symbol of Los Angeles iconography.

This grand mansion has starred in everything from Bones to Buffy.

Colorado Boulevard’s historic bookstore, operating since the bustling city of Pasadena was merely some orange groves and a few ostrich farms.

This 1920s masterpiece of French Quarter architecture hides a secret tunnel used by Albert Einstein.

L.A.'s oldest operating bowling alley is a beautifully restored homage to its speakeasy days.

A castle that was built stone by stone by an eccentric journalist.

Beautiful Victorian buildings from L.A.'s forgotten architectural past.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

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