I discovered that the park near work has a walled garden so had a wander in and nosey around.
Didn't see anyone, only two mugs of tea in an old potting shed - Have to admit I expected Bill and Ben, the flowerpot men, to appear!
This old dilapidated door was in a corner and took my eye.
On my way out I saw that 'members of the public are allowed in on the 2nd of each month between 2.00 pm and 4.00 pm." - Whoops!