architecture clipped elements England english garden Great Britain grounds hedge home house kent mansion ornamental park Penshurst Place property real estate shrub stately steps stone topiary walkway battlements building historical lawn medieval architecture old path sandstone tower windows flower bed flowers formal grass lavender Lavendula nature shrubs flagstones foliage petunias plant planter manor mediaeval medieval plants summer box patio trees landscaped sculpture statue carpet comphot01 crocus flower mauve petal purple spring yellow buildings castle lake medevil sky hever italian peace pillar style