Rome's Gate to Hell

Five US Navy planes vanish without a trace in the Bermuda Triangle, fueling speculation that this strange stretch of water is cursed. Using the latest science & tech, a team of experts investigate why the planes disappeared and where they are today.

New evidence may explain a mysterious encounter in the Bermuda Triangle.

New discoveries might explain the disappearance of 306 Navy crewmen.

Experts try to explain mysterious lights and orbs that are often sighted.

A new lead might finally solve the strange disappearance of the Witchcraft.

Experts turn up new evidence to explain why sailors and crewmen vanish.

Experts search for a sea monster reported to live in underwater caves.

Experts investigate a wreckage that might be a long-lost ship.

Test pilots and engineers embark on the first flight of the largest airplane ever built: the Stratolaunch, a one-of-a-kind aircraft designed to transport rockets, spacecraft and experimental hypersonic planes into the stratosphere.

Engineers in China are constructing the largest and most ambitious water transfer project in human history, defying nature to move vast quantities of water from the south to the dry north in Beijing, all without the use of pumping stations.

Explore three battlefield behemoths that command land, sea and air.

Inside access shows how an engineering marvel lifts boats to new heights.

Discover why the world's strangest disaster zones were built and abandoned.

New discoveries reveal what really happened in a remote Louisiana swamp.

New discoveries reveal what really happened on the shores of Lake Michigan.

New discoveries reveal why an island with a dark past was built.