Babe Ruth and others planted saplings for a 1930s tourism campaign. The saplings grew as the area faded.

This saltwater swimming pool, which is the last of its kind in the United States, is slowly crumbling within sight of multiple high-end beachside hotels.

Hawai'i Volcanoes National Park is home to one of Polynesia’s largest petroglyph fields.

This Hawaiian cattle ranch acts as a museum devoted to the island cowboys that predate the wild west.

Once home to over 8,000 exiled Hawaiians suffering from Hansen's Disease.

A beach made of semi-precious green sand on the Big Island of Hawaiʻi.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

This black shoreline is made up of exploded lava particles.

Not only does this shop sell mokorotlo, the traditional hat of Lesotho, the building is shaped like one.

This massive Maya archaeological site is home to the tallest man-made structure in Belize.

Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.

Playable, historic pinball machines fill this Alameda museum.

After the nearby mercury mine shut down, this town was abandoned and declared a Superfund site.

Julia Morgan's Moorish-Gothic labyrinth of fountains, trees, natural light and Oakland's notable dead.

This Japanese treats shop may have been the first business to mass-produce fortune cookies in the United States.

Furniture tries to escape an abandoned building in San Francisco.

Around the perimeter of San Francisco’s second-largest park is a meandering 2.7-mile path designed to inspire contemplation.

Lombard Street may be more famous, but this is the real “crookedest street in the world.”

This painted marvel is San Francisco's 400-foot ode to urban biking.

Under the shadow of its towering parent tree, a rare specimen of sequoia produces ghostly white leaves.

Part mural and part sculpture, this work of art sits in the middle of the Promenade, as if swimming in a river of asphalt towards the ocean.

Overflowing with shipping containers, this location has been transformed into a massive workspace for artists.

Faceless white figures loom over the city from the rooftop.