A model of a galactic embassy is hidden in plain sight along the highway, proposed by a UFO religion to find the aliens that created life on Earth.

This unusual lava tube spouts seawater during high surf.

A priest with no formal artistic training used basic house paint to create gorgeous religious scenes inside this historic church.

Get up close and personal with these majestic fish.

Try your hand at old-fashioned coffee growing at this museum devoted to one of the world's most coveted beans.

This legendary urban waterfall creates a dazzling display of rainbows.

This World War II-era bunker is now packed with posters and props from movies and TV shows filmed nearby.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

A unique set of caves that spits waves back out into the ocean.

This former luxury resort in Kaua'i is now an abandoned relic.

An authentic replica of an Asian temple and garden hidden amongst the natural beauty of Hawai'i.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

Essence of hound's tongue and tincture of bloodroot are just the tip of the herbalist iceberg at this beautiful, impressively-stocked apothecary.

Their motto is, "We've been bonkers for hats even longer than you have!"

An overlooked and unassuming engineering marvel.

Bonsai garden in Oakland is curated by the first non-Japanese female bonsai master in the United States.

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

A large instrument played by the wind.

A collection of memorabilia from the Beat era in the back of a San Francisco bookstore.

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

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

From pre-war whiskey cocktails to prohibition-era speakeasy secrecy, this bar has seen it all.