Depending on the region's rainfall, this church may be partially submerged.

A medieval bridge stretches over a sulfur-rich river that leads to year-round natural hot springs.

Since ancient times these picturesque springs have been providing bathers with healing waters.

Concrete strongholds stand guard over the Golden Gate.

A man-made island in scenic San Francisco Bay.

This quirky roadside attraction dives into the many theories surrounding North America's most infamous hairy cryptid.

A New England-style lighthouse along California's beautiful Highway 1 gets a re-do.

This massive redwood tree has stood in Northern California for nearly 2,000 years.

The most beautiful Taco Bell in the world even has surfboard parking.

A vast city of the dead, where the deceased outnumber the living by more than a million.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Golden Gate Park's historic collection of plants.

Depicting scenes of everyday life - and specific individuals - in Great Depression era San Francisco.

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.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

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

A hidden gem, named after a San Franciscan icon, offers spectacular views of the Pacific Ocean.

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

This turn of the century masterpiece has a mysterious goaty interloper.

The tea room that pushed the boundaries of adorable straight into... we can't find the words.

Its buzzing collection honors vibrator history.

The first fresco Diego Rivera painted in the United States can be found in the former San Francisco Stock Exchange.

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