Northern Ireland's Brobdingnagian stepping stones.

Famously misunderstood wonder of the ancient world

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The interior of the Overlook Hotel in "The Shining" was based on this Yosemite original.

Olfactory delights in San Francisco's Botanical Gardens.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

A winding path built in secret on the edge of the continent.

This massive redwood tree has a hole in the base big enough to drive through.

These WWII-era murals were initially booed as a libelous portrayal of the American dream but have survived multiple attempts to have them destroyed.

A collection of memorabilia from the Beat era in the back of a San Francisco bookstore.

Back in the day everyone who was anyone played this historic western theater.

This railroad magnate's 19th century tower is more than a little bit out of place in the Nevada desert.

Antiques by the Bay.

A decommissioned Naval base now rents itself out for people who want to blow stuff up.

A statue commemorating the heroic life of a Viking postman who was the Godfather of California skiing.

Condemned US Navy seaplane control tower turned officers’ club sits atop Yerba Buena Island.

A man-made island in scenic San Francisco Bay.

Oakland's beautiful monumental cemetery.

Julia Morgan's Moorish-Gothic labyrinth of fountains, trees, natural light and Oakland's notable dead.

Where the alchemists dream of transmuting base metal into gold was actually achieved.

A shape-shifting buy-sell-trade bookstore, born to Beatnik Era spirit.

Where a staggering 747 ships were constructed during World War II.