Travel Channel 2015 - 18 seasons 169 eps TV-PG Returning series

Expedition Unknown

2015 - 18 seasons 169 eps TV-PG

7.9

8.2

Season 18

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Season 1

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Season 3

Season 4

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Season 18

All episodes

42 min

S18 · E1 · Jun 24, 2026

Hunt for World War II Hellships Episode 1

Josh searches for lost Allied soldiers on the Hofuku Maru, a Japanese Hellship.

42 min

S18 · E2 · Jul 1, 2026

Finding World War II's Lost Prisoners Episode 2

A deep-water dive leads to the historic discovery of a lost WWII hell ship, where an estimated 1,000 soldiers made the ultimate sacrifice. Given rare access, Josh assists a U.S. Department of Defense mission, recovering potential remains of American POWs.

42 min

S18 · E3 · Jul 8, 2026

Death Jars of Laos Episode 3

Josh Gates treks into the remote jungles of Laos to investigate the mysterious Plain of Jars. Navigating landscapes still littered with unexploded ordnance, he uses advanced technology to uncover the secrets of this ancient, lost civilization.

42 min

S18 · E4 · Jul 15, 2026

Sunken City of Pirates Episode 4

A first-of-its-kind sonar survey reveals a submerged pirate lair located off the coast of Jamaica. Using groundbreaking photogrammetry, Josh dives in to hunt for the $50M stolen treasure of Black Bart, the King of Pirates.

62 min

S18 · E5 · Jul 22, 2026

Secrets of Mexico's Underworld Episode 5

Josh joins archeologists as they bushwhack through thick jungles and rappel into vast caves in search of the lost Zoque culture. Deep underground, the team pushes through flooded sections and finds thousands of ritual offerings that may solve the mystery.

7.7 · You

42 min

S18 · E6 · Aug 5, 2026

Inca Treasure Tunnels Episode 6

Josh helps discover and explore a labyrinth of lost tunnels; he dodges traffic to assist in a first-ever radar scan below the busy streets of Cuzco, Peru; he joins them as they push into the tunnels and find priceless ancient treasures.

42 min

S18 · E7 · Aug 12, 2026

Chasing Civil War Gold Episode 7

Josh hunts for millions in missing Confederate gold. First, he follows a new lead and explores a wagon train robbery site where gold and silver coins vanished. Then, an eyewitness account points to the location of Jefferson Davis's lost war chest.

7 episodes in Season 18

Some details come from TheTVDB.

Expedition Unknown

Season 18

Hunt for World War II Hellships Episode 1