Bourton House in Gloucestershire has its origins in the 16th century but is to all intents and purposes a fine 18th century Manor House. The garden has a tranquil atmosphere with a vibrant undercurrent of excitement. It has beautiful lawns, unusual terraces,
a unique shade house and imaginative topiary which includes a parterre and knot garden. I visited it in early May but I should think a visit in late June or early July would be even more amazing at the herbaceous borders will be flourishing by then.