The "original web site," this farm in Northern Vermont encourages orb-weaver spiders to build their daily webs, and then sells the preserved masterpieces.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

The headquarters of a secretive order is also a beautifully-designed park.

Historical trolley restoration and operation at History San Jose, Kelly Park.

This giant shopping mall still holds signs of its automotive past.

San Francisco Bay's ghost town.

From the Difference Engine to the Cray-1, all under one roof.

From the sky, a kaleidoscope of color brightens the grey landscape of the San Francisco Bay.

Apple memorabilia in an undisclosed warehouse, hidden for undisclosed reasons.

The world's first permanently occupied mountain-top observatory continues to report on the stars.

A hidden world of exotic succulents and cacti.

A sudden forest of traditional Papua New Guinean art works is hidden in a corner of Stanford University.

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

Subterranean house made out of a grain silo, located in the Santa Cruz Mountains.

One of the final concrete ships built before World War II is now a crumbling breakwater.

Only hotel where you can legally launder money.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

Beyond being incredibly fun, not much can be said about the Hole with certitude.

An annual celebration of the infamous, unsolved skyjacking.

Despite a legend that says this highest peak in Oregon was climbed in high heels scores of people have died on its slopes.

A giant chess set, minus the psychedelic drug trip.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

One of the most remarkable caves in all of Iceland was created by a once raging river of lava.

The longest navigable underground river in the United States is home to countless blind and albino animals.