Gardens of London
National Trust Gardens in London
Eastbury Manor House
NT_eastbury
Large Elizabethan house and gardens.  Apparently, the Gunpowder Plot of  was thought of at this house.  It stands in in 1.5 acres including a walled garden.
Date Permanent   Address Eastbury Square
Days Mon-Tue     Barking, London
Time 10am - 4pm   Telephone 0207 724 1002
Entrance      
      More at NT website