Zwingenberg Castle dates from the 13th century. In the 1326 the lords of Zwingenberg were mentioned as an owner. In 1364 the castle was conquered and destroyed by the imperial forces. The fortress and estate were then immediately divided in two equal parts and bought by the Palatinate and the archbishoprie of Mainz. The reconstruction of the castle was made by the brothers Hans and Eberhard of Hirschhorn in 1404. The brothers were invested with the castle by Mainz and the Palatinate. We owe the building as it appears today essentially to them.
In 1778 Karl Theodor of the Palatinate conferred it upon his natural son the count of Bretzenheim; the count’s mother the countess of Heydeck, was buried in the castle chapel, where her tomb still stands today.
in 1808 the palatinate was divided up upon Napoleons orders the new sovereign the Grand Duke Karl Friedrich of Baden purchased it with his own private means. Since then it has been family property of the house of Baden.References:
Medvedgrad is a medieval fortified town located on the south slopes of Medvednica mountain, approximately halfway from the Croatian capital Zagreb to the mountain top Sljeme. For defensive purposes it was built on a hill, Mali Plazur, that is a spur of the main ridge of the mountain that overlooks the city. On a clear day the castle can be seen from far away, especially the high main tower. Below the main tower of the castle is Oltar Domovine (Altar of the homeland) which is dedicated to Croatian soldiers killed in the Croatian War of Independence.
In 1242, Mongols invaded Zagreb. The city was destroyed and burned to the ground. This prompted the building of Medvedgrad. Encouraged by Pope Innocent IV, Philip Türje, bishop of Zagreb, built the fortress between 1249 and 1254. It was later owned by bans of Slavonia. Notable Croatian and Hungarian poet and ban of Slavonia Janus Pannonius (Ivan Česmički) died in the Medvedgrad castle on March 27, 1472.
The last Medvedgrad owners and inhabitants was the Gregorijanec family, who gained possession of Medvedgrad in 1562. In 1574, the walls of Medvedgrad were reinforced, but after the 1590 Neulengbach earthquake, the fortress was heavily damaged and ultimately abandoned. It remained in ruins until the late 20th century, when it was partly restored and now offers a panoramic view of the city from an altitude of over 500 meters.