The most outstanding monument of Zadar is, unquestionably, the former church of St. Donat dedicated to the Trinity. The church named after the bishop Donat from the begining of the 9th century, who is beleived to have had erected it, was first recorded in the celebrated work by Byzantine emperor Constantine Porfirogrenetus on the management of a state. Drawing upon the early Byzantine tradition, the edifice was built in the early Middle Ages, most probbably at the begining of the 9th century, as legend has it. It has a circular ground-plan and, like several other buildings of its kind built around Europe at the same period, a double space. Yet, it is a wholly original project for which there exists no prototype. Unfortunately, its original appereance has not been preserved and it now appears devoin of its former south annex. As a consequence, on this side its central volume results visible from outside. The church, leaning on the early Christian Cathedral now makes part of the episcopal complex.
The Croatian currency is the Kuna.