My gym has secure bike parking. It has wussed out a bit in recent years. It used to be entirely functional but has brought in mirrors and TVs which is a bit annoying. It still seems to be mostly a gym where sports people train though rather than a gym where people go to pose and get cross-eyed trying to check out their own and other peoples bodies in the mirror at the same time.
I really hate the emphasis on joining gyms rather than walking or cycling though. This Beeb story gave me a surprise as the comment at the end is for people to walk or cycle more which is REALLY unusual.