Buntzen lake is located in Port Moody BC. It is a great summer retreat away from the city without really going all that far. There is a hike around the lake that is about 8km long and is not too challenging. There is a beach half way around as well that is generally much quieter than the one closer to the park entrance.
The hike is a great way to spend a sunny day and taking a dip in the lake is very refreshing.