When you look into it, you could be forgiven for thinking that all the people of Zadar have done through the centuries is build churches. Looking at this gives you a good idea of exactly how long the city has been standing, and how rich that life has been. Here are the main highlights. Note: churches are normally only open for Mass - each has its own timetable. All churches expect you to cover up: short shorts and tiny tops will not only raise eyebrows, but you may be handed a cover-up or refused admittance.