A massive sea stack famous for its appearance in The Goonies.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

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

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

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

A terrific purveyor of natural history objects and curios.

The water swaps direction twice a day, whipping into a frenzy of whirlpools and rapids.

After spending more than a century on the ocean floor, this shipwrecked column is finally resting atop solid ground.

At just six feet two inches deep, it is said by Guiness and Ripley to be the world’s narrowest freestanding office building.

Antiques shop filled with all manner of curious collectibles.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

City Council meetings still happen in this historic building, impeccably preserved on the inside.

Railways may have forged this quintet of lovely tunnels, but now they are open to hikers.

The colorful, smiling concrete silos of Vancouver.

This quirky piece of naval artillery has been deafening Canadians for over a century.

Portlandia is the second-largest copper repoussé statue in the United States.

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

The magic's in the hole!

A sleepy little town that had the greatest landslide in North American history fall on it.