Hidden behind a wall for decades, this masonic lodge was only rediscovered during renovations.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

This coastal cavern is associated with the Hawaiian god of creation.

In 2018, Pohoiki Road was severed by lava flowing from the eruption of Kilauea.

This ruined fort and statue are a testament to the last king of Kaua‘i’s savvy diplomacy skills, which briefly brought Russians to Hawai‘i.

Images chiseled into the basalt here date back an estimated 300 years.

Football field-sized microalgae production tanks on the Hawaiian coast create a stunning view from space.

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

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

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

This unusual lava tube spouts seawater during high surf.

This blowhole is supposedly caused by a trapped monster.

Get up close and personal with these majestic fish.

Submerged lava formations create incredible waterworks.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

These ancient sacred grounds granted amnesty to those who managed to reach them.

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

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

Race through the maze, get your name on the sign.

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

Bronze footprints mark the path where a civil rights leader tried to march in peaceful protest before being knocked unconscious.

St. Augustine's record-setting narrow street was designed to protect against pirates.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

This historic tall ship traveled 1.5 million miles around the globe, and once did duty as the mythical pirate ship in Peter Pan.