Barely visible foundations remain where Stow Lake’s “observatory” once welcomed visitors.

Amazing meticulous gardens of personal wood carvings, Hydrangea, Canna, and many other flowers.

The remains of a 12th-century chapter house in Golden Gate Park.

Inside an old airplane hangar, friends and strangers alike play on a massive trampoline.

Half of a house.

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

A Barbary Coast watering hole built into a Gold Rush shipwreck.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

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

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

This historic Chinese church was relocated and revived as a museum that preserves and celebrates Chinese art, history, and culture.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

One of the largest trees of its kind in California.

An ode to the friendship between four Pacific Rim countries.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

North America's largest accredited model railroad museum.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

A couple turned their front yard into an artistic masterpiece.

Now housed in a museum, this giant pink elephant stood in downtown Seattle for more than 60 years.

Craft liquors concocted in an old Seattle warehouse.

This music school doubles as a store for unique, hand-crafted, and hard-to-find instruments.

A 1,000 pound brass bell commemorates a time when this small maritime neighborhood was actually its own separate city.

This beautiful landscape is the only Sichuan-style garden outside of China.