My family used to farm a chunk of land in Lincolnshire, UK. Many of our farms were on or surrounded by active or decommissioned RAF bases.
I learnt to drive on the unused tarmac at one of those old bases, RAF Wickenby. As the parent poster mentioned, many of the bases are worth a visit and Wickenby in particular has a memorial to airmen lost in the world wars.
Dunholme Lodge was defunct RAF base near the then active V-bomber base RAF Scampton. It was a favourite place for us RAF kids to explore - the concrete of the torn up runway provided all sorts of caves, and there was a deserted multi-storey control tower, which was quite frightening when the winds were blowing. This would have been the early 1960s - I think it is all farmland or new-build housing now.