Public swimming pool. Used by Vecova for therapy, but also has public opening hours. 34.5°, saltwater, accessible (ramp down into the pool, and you can borrow a waterproof plastic wheelchair). You can see the pool through the big windows that look out onto the grass north of the parking lot and south of the access road.
https://vecova.ca/2021/07/08/get-back-in-the-swim-of-things-public-swim-is-back/

Just east of the pool in the same building is a large gym. There's also six rooms for fitness classes, etc.. There's also equipment; treadmills, stationary bikes, gymnastics stuff, yoga blocks, balls, all that. These rooms are used for public classes and facilities rental.
https://vecova.ca/aquaticshealthfitness/

They call this an "Aquatic, Health & Fitness Centre". Maybe label as an aquatic and recreation center? The pool is right under this marker, anyway.