Sky History2

President Hindenburg suspends freedom of speech and Hitler comes to power in 1933. The first concentration camps for political opponents are set up.

Eerie encounters at 40,000 feet, accounts of UFOs taking control of aircraft, and jumbo jets disappearing. Is this proof of aliens in our airspace.

Could the megalithic structures of Malta - and an underground complex housing otherworldly remains - be linked to local legends of alien visitation.

History's most acclaimed prophet, Nostradamus, saw the arrival of three Antichrists that would plague mankind. But who are they.

In 1923, Adolf Hitler led the infamous Beer Hall Putsch, an attempt to take power in Germany by force. It was a day that would change the world forever, birthing Hitler's regime.

In 1945, WWII was over but the violence had not ended. The survivors want to blame the Germans. The reckoning with National Socialism is ambivalent.

The Jericho Head, the Cloudbuster and the Map: Examine a 9,000-year-old clay head, a 1950s machine built to control the weather and a map which could be the oldest ever found.

Discover Tikal, one of the largest and most powerful archaeological sites and urban centers of pre-Columbian Mayan civilisation.

Count down the world's top ten pyramid sites, from hidden structures in Peru to the famous landmarks of Giza in Egypt.

Count down the top 10 mysterious devices found around the world, from strange discs found in a cave in China to an ancient Greek computer.

The definitive combat helicopter debuted in Southeast Asia, serving as transport, gunship, smoke ship, command center, MediVac and many other roles.

Explore classic and underrated aircraft, from WWII fighters to the Screaming Eagles F4, showcasing aviation's evolving history.

Stone Age Engineering and Battle of Bullecourt: Finds from the East include a monument as old as Stonehenge and some disturbing Roman burials. (3 of.

The team search for remains of the crashed WWII Spitfire and discover parts of the cockpit. (1 of.

Ross hops to Plymouth and explores a coastline littered with treasures. A bout of hypercapnia leaves Ross shaken after exploring a shipwreck.

Ross goes in search of wrecks that help tell the story of D-Day and discovers that winning wasn't just a case of superior power, but also ingenuity.

Count down the world's top ten pyramid sites, from hidden structures in Peru to the famous landmarks of Giza in Egypt.

Count down the top 10 mysterious devices found around the world, from strange discs found in a cave in China to an ancient Greek computer.

What is the fate of our cars, planes and roads? What part would armadillos play in a future without people? And how do abandoned oil refineries threaten major disaster.

Water gives life, but it can also destroy. Discover how, in a world without people, rain submerges New Orleans and corrosion topples Seattle's Space Needle.

On the orders of Adolf Hitler, the Nazi invaders of Alderney utilised more than 5,000 slave labourers to build a series of protective fortifications. (1 of.

The World War II killings carried out by the Nazis on Alderney represent the worst mass murder in British history - yet no one has been brought to justice. (2 of.

Declassified: Explore some of the darker elements of the MK Ultra programme, which sought out a miracle mind control method via human experimentation.

Towards the end of the war, the bombing of the city of Dresden provided one of the most controversial episodes of the war. This episode tells the story.

The fall of Singapore and brutal Burma Railway highlight the conflict, alongside the Chindits and Merrill's Marauders.

Count down the world's top ten pyramid sites, from hidden structures in Peru to the famous landmarks of Giza in Egypt.