Avebury is a Neolithic henge monument containing three stone circles which is located around the village of Avebury in Wiltshire, south west England. Unique amongst megalithic monuments, Avebury contains the largest stone circle in Europe, and is one of the best known prehistoric sites in Britain. It is currently used as both a tourist attraction and a place of religious importance to contemporary Pagans.....During the Early Mediaeval, a village first began to be built around the monument, which eventually extended into it. In the Late Mediaeval and Early Modern periods, locals destroyed many of the standing stones around the henge, both for religious and practical reasons. The antiquarians John Aubrey and William Stukeley however took an interest in Avebury during the 17th century, and recorded much of the site before its destruction. Archaeological investigation followed in the 20th century, led primarily by Alexander Keiller, who oversaw a project of reconstructing much of the monument. http://en.wikipedia.org/wiki/Avebury
The overlays that highlight 17th century London features are approximate and derived from Wenceslaus Hollar’s maps:
Open location in Google Maps: 51.426769, -1.853218
Chart showing the number of references in each month of the diary’s entries.