Beneath the surface of America lies a hidden world—literally. In this video, we explore 10 secret underground places in the U.S. that most people have never heard of. From Cold War doomsday ...

Discover the hidden rivers buried beneath cities around the world. ... It could be an actual river buried underground in the name of urban progress. ... South Korea // Buried by 1958.

Jersey City was one of the last stops on the Underground Railroad, a network of escape routes and passageways that started in the states the enslaved people and wound its way north.

Beneath the city streets that travellers walk on each day, dark labyrinths of underground tunnels transport travellers to a time when millions of people were buried underground.

How ‘Daylighting’ Buried Waterways Is Revitalizing Cities Across America Urban centers are exhuming creeks and streams once covered up to control floodwater—and bringing life back in the process ...

What’s old is new again. NASA scientists discovered an underground “city” buried 100 feet beneath the ice of Greenland.

The Neglinnaya River (also called the Neglinka River) used to flow across Moscow from north to south, until it was buried underground in 4.7 miles (7.5 kilometers) of tunnels. Today it drains into ...