MY Grandmother was Portuguese and born in Macau is it still possible to see some of the old Macau?

Hello,
My grandmother was Portuguese and born in Macau, what sort of a day itinerary would you suggest as a way of seeing "the old Macau" the Portuguese bakeries and restaurants for lunch and of course St Paul's church and if possible any old streets that indicate what Portuguese life was like in the "40's & 50's etc. If necessary I could come back for a second day as we are staying in Kowloon.
Thank you