The Roman Catholic Cathedral of St. Anastasia, the largest church in Dalmatia, is on a tentative list for UNESCO World Heritage Site status. It makes its way to the top of Zadar's tourist must-dos because of its bell tower. Begun in 1452, it wasn't completed until 1894, with the addition of some details to the top of the tower. There's a small entrance fee to climb all the way up, which is not advised if you have vertigo (though there are three landing stages where you can rest in transit). At the end of the climb, you'll be rewarded with stunning views of the city and the sea beyond. If you want to visit the church, note that they don't let visitors in with bare shoulders or dressed in shorts. It's closed to tourists on Sundays.