We loved our only visit to Zacatecas. Our only advice would be to not try to drive in the city. Maybe park at the gondola parking (of course with your towed vehicle) and take taxis down town. Then catch the double decker sight seeing bus. We were the only people doing that then and had a good fellow doing the explanations along the route. We had told the driver we would want to take their tour, but only after we had our lunch, and they were there waiting for us (it seemed). We don't usually look at the churches anywhere we go, but one there was extrodinary, with the work done on the outside. We did drive into the city, but the roads are so narrow and unless you knew the city your chances of getting lost are very high- we needed a taxi to show us out of town as we were hopelessly lost!