A pilot glimpses a flying saucer, hundreds of UFOs are captured on film in Norway, and the UK’s first criminal investigation into a UFO assault.
A cyclist sees glowing UFOs in the sky, two US soldiers discover a landed craft, and strange files describing a UFO sighting in Venice from 1936.
A pilot reports a hovering object 10,000 metres above Paris, a headmaster in Portugal glimpses a strange disc and a driver sees an intense light.
Locals spot an object above a Portuguese town, military personnel see a series of UFOs in the sky, a craft emits strange lights across a village.
A thousand strange objects appear over Sweden, a pilot is circled by a UFO, and a journalist uncovers a mass sighting in an Italian village.
A US pilot vanishes at the height of the Cold War, UFOs are sighted over Germany, and a series of unexplained events shock a Sicilian village.
From strange lights in the sky to mysterious aircraft maneouvres, explore Europe's unreported – and unexplained – UFO history.
