Hollar’s map of the ‘ruined city’

‘An Exact Surveigh of the Streets Lanes and Churches contained within the ruins of the City of London … John Leake, John Jennings, William Marr, Will. Leybourn…’ Subtitled: Hollar’s ‘Exact Survey’ of the City of London, 1667. Catalogue ref: ZMAP 4/18. 

• Can you find these places on the map: River Thames; Tower of London; St Paul’s Cathedral (from above it looks like a cross); Pudding Lane (north of the river, near the bridge.) 
• Why are there not many buildings shown in the white middle part of the map? 
• Many halls, or meeting places for different craftsmen are show in the in key. See number 153 for example. Why is this information valuable for historians? 

Visual description

The map is captioned Hollar’s ‘Exact Survey’ of the City of London, 1667. It shows the city of London north of the river Thames which was damaged by fire. This walled blank area is surrounded outside by densely drawn houses, streets, a couple of green spaces and an artillery ground.  On the left is an inset image of the city on fire and covered with billowing clouds of smoke. In the right corner of the map, is inset box containing a key for the buildings, wards and guild halls in the walled city which were damaged by fire.  At the end the key the text says:  Burnt 373 Acres within. 63 Acres & 3 roods [unit of measurement] without the walls; 89 Churches; 13200 Houses, … Parishes within the walls entire.

Transcript [for key] [Note several words are defined in square brackets.]

Burnt 373 Acres within. 63 Acres & 3 roods [unit of measurement] without the walls; 89 Churches; 13200 Houses, … Parishes within the walls entire.