Located in the depths of the Chorlton Ees Nature Reserve lies the former Mersey Valley Water Pumping Station Secret Concrete Graffiti Temple, AKA [incorrectly in terms of local council boundaries] Withington Pumping Station.
It's a super brutalist concrete structure that's currently abandoned so has become a spot to paint without any outside interference. It's worth a visit - just walk down from Chorlton Green en route to Jackson's Boat and swing right, when you get to this gate...
Photos of the art below but assume it changes week to week.
& here's a kinda similarly-themed soundtrack, recorded in Chorlton in 1999,