Hardenbroek Castle was first time mentioned in 1331. The castle is a square form house built to the site of original keep maybe around 1260 by Gijsbert van Wulven. The present day appearance dates from the restorations made in 1694, 1762 and 1789. Today Hardenbroek is privately owned.
References:This is the castle from which my family takes it name: Van Hardenbroek (just Hardenbrook in America). My family visited it in 1986 when you had to wander the roads of Holland to find such things. No google maps back then!
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.