Latest episode
S4 E9 · America's Hidden Training Camp
Mysteries of the Abandoned: Hidden America is a mystery and documentary TV series that premiered on Science on November 10, 2022. It has 4 seasons and 28 episodes so far and is still airing new episodes. The latest episode, Season 4 Episode 9 "America's Hidden Training Camp", aired on August 6, 2025.
Scattered across the United States are abandoned structures, forgotten ruins of the past and monuments to a bygone era. Each one shines a light on the story of this land and its people, revealing the secrets of a hidden America.
Last updated
28 episodes · 4 seasons
2022 · 6 episodes · Last episode: 3 years ago
E6
A historic sea vessel rusts in the Delaware River; experts investigate and reveal a passenger liner and the architecture that doubled as a U.S. warship. Further segments of the episode portray the Idlewild vacation resort in Michigan, the Bolinas Transmitting Station in California, and the Cahokia Mounds in Illinois.
E5
A derelict ghost town shows a curious revitalization along an iconic highway in the Mojave Desert; experts investigate and reveal a once thriving and bustling Route 66 stopover that’s being resurrected into a historic Americana destination. Further segments of the episode portray Murphy Ranch in California, the Belle Isle Zoo in Michigan, and the Charleston Navy Yard and Navy Medical District in South Carolina.
E4
A sprawling military facility dotted with bunkers for miles now stands abandoned in the American heartland of Edgemont, S.D.; experts investigate and uncover a once highly-secure WWII ordnance site designed to store deadly munitions. Further segments of the episode portray the Brushy Mountain State Penitentiary in Tennessee, Wolf House in California, and Pueblo Bonito in New Mexico.
E3
A monstrous airplane that helped America reach new, historic heights sits decommissioned in Tucson, Ariz.; experts investigate and reveal one of the most important aircraft of the 20th century and its contribution to the Apollo spaceflight program. Further segments of the episode portray the North Wilkesboro Speedway in North Carolina, the Potomac River Defences in Maryland and Virginia, and Fort Hunt in Virginia.
E2
A curiously designed, windowless building adorned with gold tinted diamond shapes now stands derelict in Tulsa; experts investigate and uncover a controversial religious figure and the headquarters behind a pioneering form of American TV evangelism. Further segments of the episode portray the Kreischer Mansion in New York, the Mid-South Coliseum in Tennessee, and Michigan Central Station.
E1
An eye-catching collection of graffiti covered structures that were once a pioneering entertainment attraction now stand derelict in the Mojave Desert; experts investigate and reveal the revolutionary remnants of America's first waterpark. Further segments of the episode portray the Smith Mansion in Wyoming, the Threatt Filling Station in Oklahoma, and the Miami Marine Stadium in Florida.
2023 · 6 episodes · Last episode: 3 years ago
E6
An unassuming factory marks a seismic leap forward in how humans travel.
E5
This secluded Georgia plantation marks a dark chapter in American history.
E4
This bowling alley was once the site of a fatal struggle for desegregation.
E3
A railroad enterprise once built this company town for its workers to live in, but when thousands of employees went on strike, the military intervened; the history of the complex remains as relevant as ever.
E2
An upstart mining town fuels the American war effort in both World Wars with its bountiful deposits of lead and zinc; the dusty remains of the mining efforts that put Picher on the map would condemn the city to abandonment years later.
E1
A beloved hospital in the Big Easy was once the site of heroic efforts by medical staff and volunteers to evacuate patients after Hurricane Katrina in 2005. Left in ruin, the historic Charity Hospital is being revitalized by another major New Orleans institution, Tulane University.
2024 · 7 episodes · Last episode: 2 years ago
Scattered across the United States are abandoned structures, forgotten ruins of the past and monuments to a bygone era that reveal the secrets of a hidden America.
Mysteries of the Abandoned: Hidden America Season 3 release dates →
E7
An old mining town in Wyoming provides sanctuary for Amelia Earhart, a hotel in the Deep South becomes a historical crossroads, and a forgotten Connecticut theater hides secrets beneath the surface.
E6
The National Guard puts down a prison riot in the Great Plains and an abandoned mining facility in Alaska marks a pivotal chapter in the gold rush.
E5
A rundown nature park is full of strange secrets and connections.
E4
A labor strike in an Arizona mining town ends in a mass kidnapping and deportation.
E3
Forgotten soldiers of the Old West guard a fort at the southern border, pirates plunder a major salmon provider, a mountaintop hotel hosts both presidents and revolutionaries, and an American legend springs from a humble Alabama home.
E2
Alabama's first capital goes bankrupt after hosting a Revolutionary leader.
E1
A rural town in Oregon is taken over by an eccentric cult.
2025 · 9 episodes · Last episode: 1 year ago
A Military Base trains soldiers in modern warfare to help defeat the Nazis; a suburban basement becomes a major cog in the Detroit bootlegging scene; a brave woman leads a labor union against organized crime.
A brewery in the Pacific Northwest sustains prospectors during the Gold Rush; a Wyoming mining settlement descends into lawlessness; a murder in a small Mississippi town sparks a revolution.
A desert facility trains a nuclear strike force; a church becomes a sanctuary from racial violence; an old military building spawns a creature that haunts a small town.
The remains of Idaho's nuclear industry mark a new era of American history; a distillery in rural Kentucky revolutionizes liquor; a New England settlement prospers despite prejudice; subterranean chambers produce many of the nation's monuments.
A research facility spawns new technology with earth-shattering implications and a coastal haven for African Americans changes the nation.
Visit strange structures in New York where Nazis helped launch the US Space Race and then see a New Orleans amusement park where joy turned to despair.
A company town produces weapons that transform the Wild West and a building complex revolutionizes communications on this world and beyond.
A crew searches for a shipwreck loaded with gold and sets off a long legal dispute and a lavish complex in the Catskills attracts many of America's great comics.
E1
Get chills in a bleak communications hub that housed a California cult and then eye a secret US Navy arsenal in Florida.
A date for the next episode of Mysteries of the Abandoned: Hidden America hasn't been announced yet. Follow Mysteries of the Abandoned: Hidden America in the Streambay app and you'll be notified as soon as a new episode airs.
The most recent episode of Mysteries of the Abandoned: Hidden America, Season 4 Episode 9 "America's Hidden Training Camp", aired on August 6, 2025.
Mysteries of the Abandoned: Hidden America has 4 seasons with 28 episodes in total.
Mysteries of the Abandoned: Hidden America first aired on Science on November 10, 2022.
Download the Streambay app, follow Mysteries of the Abandoned: Hidden America, and you'll get a push notification the moment each new episode is released.
10.0
7.1
7.3
7.2
8.1
6.4
7.4
7.7
6.2
S15 · E10 4 days ago
7.5
7.7
Download Streambay and follow Mysteries of the Abandoned: Hidden America. We’ll notify you the moment a new episode is released. It’s free, with no sign-up and no personal information required.
