Gåseborg was an magnificient ancient hill fort built in the Iron Age, about 1500 years ago. It was built of stone without any masonry. According the archaeological excavations the fort has been also a temporary residence. For example remains of golden artefacts have been found from the site.
References:These are great photos, thanks for uploading. I grew up in Viksjo and used to play on this mountaintop. Would love to visit today and take some photos, but I live in the US now. Thanks!
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.