This 19th-century museum inside of a lighthouse is only accessible during low tide.

This old-world mansion with lush gardens is a gem in the heart of Silicon Valley.

The beautiful behemoth is one of the largest trees of its kind in the United States.

This unique graffiti art from the 1940s has become a staple of this local landscape in the remote California desert.

A 90-acre park on former landfill that hosts an annual kite festival.

This small monument to the great inventor contains a time capsule and a Wi-Fi hotspot.

Anyone can control this glittery light installation with just a phone call.

This restaurant's marvelous musical machines include a self-playing violin.

Seven ceramic sculptures are scattered around this California college campus.

An art collective teaching the more fiery, metal-y art forms.

A poignant memorial to a young boy whose death spurred a dramatic increase in organ donations in Italy—dubbed the "Nicholas Effect."

The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

One of Hollywood’s favorite government buildings.

At the base of the Golden Gate Bridge, a small sign basically begs for a high-five.

This subtle Berkeley paving stone actually marks off a lawless tube of air that extends into space.

At this 1940s-era neighborhood favorite, you can still drink a cherry phosphate.

Perched high atop telephone poles is an uncanny outdoor art gallery that greets passersby on their commute.

This contorting sculpture is the tallest in San Francisco.

It is locally loved and ridiculed for literally looking like poop.

A gap in the concrete has been transformed into a miniature playground for the mind.

Everything you always wanted to know about borates is here.

The small family-run business has kept alive the fading art of creating beautiful handmade book covers.

A unique market that brings together various goods and cultures.

Formerly Fire Station No. 27, the museum is a hidden gem in the heart of Hollywood.