The Late Gothic Eagle Tower was built in the 15th century as a part of the Rüdesheim city fortification. It is 20,5 m high with a 5 m interior diameter, 1 m thick walls, four floors and an underground dungeon accessible only through a hole in the vaulted ceiling. It was located close to the river. In winter, when the frozen up Rhine was safe for crossing on foot, a basket with combustible material was put on the tower as a fire signal. In the 19th century, when the Adlerturm housed an inn called “Zum Adler” (In the Eagle), Johann Wolfgang von Goethe, Germany’s greatest poet and literary man, frequently stayed here during his Rüdesheim visits in order to enjoy the magnificent view of the Rhine. Today the Adlerturm is the property of a bank.
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.