In the 18th century more accurate surveys began to appear in the flat ground plan we know today as maps.
Still they tended to show some significant buildings in elevation, like the ward plans of London in Strype's 1720 edition of Stow's .
Cambridge University has a set of hand-coloured proof copies of Speed's maps, which it has put online.
Maps could be commissioned for military reasons, for property owners or as evidence in legal cases, for example these interesting maps of the Plantation of Londonderry by the London Companies.
In general urban surveyors gave closer attention to prominent buildings than to the mass of ordinary dwellings.
Churches would be drawn individually, while houses might just be indicated by rows of identical roofed boxes.
A county surveyor such as Saxton on the other hand might indicate villages and towns by a conventional church symbol, identical from place to place.
But no assumptions should be made, as there is so much variety. (Amsterdam 1966), which has engraved bird's-eye views of: Bristol, Cambridge, Canterbury, Chester, Cork, Dublin, Edinburgh, Exeter (shown here), Galway, Lancaster, Limerick, London, Norwich, Shrewsbury, and York (and perspectives of Oxford and Windsor).A few significantbuildings were marked on the map by letters, with their names given in a key.The use of such keys was quite common and can be seen more clearly in this zoomable map of Edinburgh c.1647 by James Gordon of Rothiemay.James Millerd's map of Bristol in 1671 was also based on a measured survey, but still used the familiar bird's-eye view.It had vignettes of major buildings around the border, as did some other 17th-century town plans.The value of accurate maps for planning purposes became increasingly obvious.