The Protestant Church of the Redeemer (Heilandskirche) is famous for its Italian Romanesque Revival architecture with a separate campanile (bell tower) and for its scenic location. It was built in 1844. The design was based on drawings by King Frederick William IV of Prussia, called the Romantic on the Throne. The building was realized by Ludwig Persius, the king's favorite architect. The church is situated on the bank of lake Jungfernsee, 300 metres south of Sacrow Manor at the edge of its park, designed and expanded in the 1840s by landscape architect Peter Joseph Lenné. Both church and manor were restored in the 1990s. This area of lakes, forests, parks, and castles has been classified as a World Heritage Site by UNESCO.
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.