Heaton Park BT Tower lies on the banks of the reservoir, which is close to Junction 18 of a motorway that encompasses which city ?
Heaton Park Reservoir:  Heaton Park BT Tower lies on the banks of the reservoir, which is close to Junction 18 of the M60 motorway. M60 motorway:  Most of the City of Manchester is encompassed within the motorway, except for the southernmost part of the city (primarily the Wythenshawe area and Manchester Airport), which are served by the M56.
Manchester