I found 9 photo memories of staff and volunteers who did great work at the iconic centre which served Sunderland.
They stretch from 1978 to 2012 and we hope you can spot someone you know.
In case you missed it;
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5. Back to 1991
Tell us if you recognise the swimming instructor taking a lesson at Crowtree Leisure Centre in 1991. | se
6. A lotta lorry memories
A team from Crowtree took part in a sponsored lorry pull in October 1987. Get in touch if you were one of the people pictured. | se
7. Working out in 1983
Wearside women were at Crowtree in 1983 in two Guinness workouts. Workout demonstrator Susan Weatherall-King presents tracksuits to the first prize-winners in the Echo/Guinness competition. Left to right are: Christine Brown of Seaham, Penelope Lane of Shotton and Jan French of Pennywell. | se
8. Working out in 1983
Some of the instructors and their students at the 1983 Guinness Workouts at the leisure centre. | se