Its central green mound, hiding a reservoir, is dotted with mature trees on all four sides (embankments).
In 1855, the Upper Pond was drained, deepened and lined with tall walls, all buffered by tree-lined embankments.
Thames Water have exclusive access and take charge of repairs, cutting and planting, assisted by volunteer projects and residents' information.
The street-side railings have a mixed set of pointed finials and form a neat, paradigmal archetype so are listed.
Much repaired, they have ornate brick dressings to windows and dividing storeys, with some use of white stucco and cornices, with original street-side railings.