I am not sure exactly what your question is - are you looking for gaming materials or historical resources?
One gaming system that has a more historical flavor is Ars Magica (Set in medieval Europe, only with real magic) This system has several supplements that may help.
Then there's those kids' books by David MaCaulay - Castle and Cathedral - fictionalized but researched stories about how these buildings were created. Great stuff.
Also, the book Cities by John Reader may be a great place to get some food-for-thought. He examines urban history by looking at case studies of cities from Ur up until the present day. It's very interesting.