And to celebrate, here are 9 photos from films you have enjoyed in the fresh air in years gone by.
Whether it was Grease at Herrington Country Park or Star Wars at Seaham Carnival, it looked like you had a great time.
In the meantime, get into that big screen vibe with this step back in time.
1. A chance to dance
Dancing at the open air performance of Grease at Herrington Country Park as part of Sunderland Live in 2011. Photo: se
2. Pink Ladies in the spotlight
The Pink Ladies take their seats for the 2011 screening at Herrington Country Park. Photo: Picture by Tom Yeoman
3. May the memories be with you
Watching the Star Wars movie on Seaham sea front. Are you in this 2016 photo? Photo: se
4. Those Summer nights
What a great day at Sunderland Live as fans got to watch this film classic in 2011. Photo: Picture by Tom Yeoman