While the previous tournaments have been hosted by one or two European nations, this year's edition will be hosted across 12 countries.
Both semi-finals and the final will be hosted at Wembley Stadium in London, while the opening which will involve Italy, is scheduled for the Stadio Olimpico.
There are still play-off matches to be played to decided the remaining teams to qualify for next year's show piece.
Group A: Turkey, Italy, Wales, Switzerland
Group C: Denmark, Finland, Belgium, Russia
Group C: Netherlands, Ukraine, Austria, Play-Off Winner D
Group D: England, Croatia, Play-off Winner C, Czech Republic
Group E: Spain, Sweden, Poland, Play-Off Winner B
Group F: Play-off winner A, Portugal, France, Germany