Airfield
Oh and before I forget .. surely the best AND oldest 'lost' airfield is the Sevenoaks Aerodrome where the Sevenoaks Aeroplane Company, or something near had three WW1 hangars on the South East perimeter of the field are still standing. I think they have a preservation order on them. I landed a heli there around 1998 and the signwriting of the Sevenoaks name was just discernable on the hangar roof. Now cow sheds!
Dennis Kenyon.