Here is a link to another incredible London map from the 16th century.
And here is a splendid “film” on the development of the Palace at Westminster.
This is the Shambles of York. Crispin lives on the Shambles in London, similar to this one. It was the place for butchering and selling meat. Couldn’t have smelled very good. See how the street almost closes in on itself,the buildings twisting toward the middle? It became very crowded in London and other large European cities at this time. People built upward before they stretched the boundaries of the town itself. Of course London eventually did grow outward as well, taking over farmland and plains. There were laws in place to try to protect the public and prevent encroachment on other people’s property. And, of course, the crown collected their fees and fines for all of it. But they tended to overbuild in the middle ages and paid for it with horrible fires in London, one reason straw roofs were outlawed there. I believe the new Globe Theatre in London is the only structure within the city to be allowed a thatched roof in many hundreds of years.