Hats off to all these people. They have all played a part in preserving a piece of Wearside.
And they did it by burying time capsules across Sunderland.
Others were marking big occasions such as expansions in The Bridges or laying the foundations at Nissan.
The Sunderland Echo got it all on camera and you had a part to play in our past.
1. Time travels
You all played a part in history in these scenes.
2. A big day at Nissan
Among the things buried at Nissan in 1984 were a Sunderland FC shirt, the No 1 hit parade record, a bottle of whisky and a copy of the Sunderland Echo.
3. Back in time to Barnes Park
Burying a time capsule in the new development area of Barnes Park in 2011.
Taking part were all these people, including pupils from Barnes Infants school.
4. Bridging the gap to 2012
Pupils from Hudson Road primary school helped to bury a time capsule to commemorate the £15million Primark expansion at The Bridges 11 years ago.