Quoile Castle is a 16th-century tower house, which was inhabited into the 18th century. The south corner of the building has fallen down and shows a cross-section of the castle. In the north east wall the doorway has been rebuilt and gives access to a straight mural stairway. This is protected by murder-holes at the bottom and at the top. The inner doorway at the ground floor opens into a chamber with a stone vault and many small gun-loops. Beyond this is a second similar chamber. The first floor has two rooms and one of them has a fireplace. The second floor is reached by another straight stairway within the north west wall. There is another fireplace at this level.
References:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.