We have some great maps of Dominican Republic, Santo Domingo and the Colonial Zone. I hope they help you with finding what you are looking for.
We are working on a Google map of all the sights, monuments, parks and other important stuff. I will continue to add items and also make them linked to their respective pages in the web site for more detailed information.
I have added the old black and white map of Colonial Zone with all the monuments and places marked for reference.