A once-glowing grotto at the bottom of Waikapalae Wet Cave.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

Watch the newest land on the planet form before your eyes.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

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

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

A tunnel of hardened lava along Maui’s famous Road to Hana.

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.

A whimsical village of unique treehouses resides in a Washington forest.

The final resting place of one of the most sensational guitar players of all time was created only after his father got the rights to his music.

Pick up all of the cosmic knick-knacks under the sun or take a creative writing course, all offered in this novelty storefront.

The highest point in Washington state is a volcano covered in glaciers.

The site of the Wellington avalanche, one of the America's worst railroad disasters.

Cave carved out of a huge snow drift collapsed killing one and injuring five in July 2015.

The tiny church offers succor to travelers driving by, but only eight at a time.

"The House That Love Built" is shying away from "The House That Ghosts Love."

Tacoma’s 25-foot coffee pot music spot has served up over 80 years of concrete kitsch.

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

This quiet neighborhood is also home to a 700-ton rock transported by the last Ice Age.

An allegedly haunted mansion with a tragic, tawdry past.

An eclectic restaurant serving from and to the nearby Chittenden Locks.