The historic grounds of Abney Park are situated in Congregationalist'), Dr Isaac Watts, and the neighbouring Hartopp family who leased the eastern part of the park from Lady Abney. In the early 17th century, Lady Mary Abney's park was accessed via the frontages and gardens of two large mansions on her estate — her own manor house (Abney House), and the neighbouring Fleetwood House and its detached Summerhouse. Both mansions fronted onto Church Street in the quiet Dr Isaac Watts and Cedar of Lebanon tree had already taken place, adjacent to an ornamental pond. This tree survived into the 1920s and is illustrated in many engravings.