A terrific purveyor of natural history objects and curios.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

Home to items never before seen by the public.

Inspired by a foil-wrapped potato, (seriously) the Markel Building has been deemed one of the 10 ugliest buildings in the world.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

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

An architect's childhood fantasy treehouse made real.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A beautiful geyser under environmental threat.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

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

The miraculous hydrant that saved the Mission District in 1906.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

Two thousand artifacts from around the world collected by one woman who loved to travel.

Three prestigious academic collections come together to create a world-class natural history museum.

Impossibly life-like natural history models created out of glass by a father and son.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

The most loyal of little dogs, or a Victorian era publicity stunt?

Protecting the dead from opportunistic body snatchers.

20-foot tall lamp mumbles Swedish to celebrate the holidays.

This chimerical bridge/tunnel appears to dead end right into the sea.