A monumental cross hides in the trees in Golden Gate Park.

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.

An enormous illuminated figure dances on the Las Vegas strip.

A man-made island in scenic San Francisco Bay.

Since 1973, this block has been home to the most concentrated collection of murals in San Francisco.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

Golden Gate Park's historic collection of plants.

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

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

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

An essential stop before plundering, BYO Cutlass.

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

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

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

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

Olfactory delights in San Francisco's Botanical Gardens.

A psychedelic labyrinth on the San Francisco bay.

An artsy hidden staircase leads to breathtaking views of San Francisco.

A shady solar power system that couldn't hold up to the harsh desert conditions.