Hammershus
Hammershus is a medieval era fortification at Hammeren on the northern tip of the Danish island of Bornholm.
The fortress was partially demolished around 1750 and is now a ruin. It was partially restored around 1900.
History
Hammershus was Scandinavia's largest medieval fortification and is one of the larger medieval fortifications of Northern Europe. It is situated in the Baltic Sea above sea level. The fortification was erected in the 13th century and consists of the base castle residence and features a grand tower called the "mantel" tower. Hammershus Fortress features a perimeter wall around the castle grounds.Initially built by the local distinct Islanders for their own determination of purposes and was later the site of many wars. During a number of successive struggles between the Danish monarchs|kings of Denmark] versus the Archbishopric, the fortress was invaded and used to be a refuge for the Archbishops including Bishop Jens Grand. It was later conquered by the king's army on a number of occasions, e.g. 1259, 1265, 1319, and 1325. In 1521, it was taken by king Christian II, who used it to imprison Bishop Jens Andersen Beldenak of Funen. The fortress was conquered by forces of Lübeck the same year.
In 1658, Hammershus was occupied by Swedish forces, but a rebellion on the island terminated the Swedish rule. The rebels, led by Jens Pedersen Kofoed, shot the Swedish commandant Johan Printzenskiöld, and the Danish peasants traveled to Copenhagen to return the island to the king of Denmark.
Corfitz Ulfeldt and his wife Leonora Christina were imprisoned in Hammershus 1660-1661.
Johann Conrad Dippel the German Pietist theologian, physician, alchemist and occultist were held imprisoned from 1719 to 1724 at Hammershus.
In 1743 Hammershus was abandoned as a stronghold. The remains were preserved in 1822. Since the major excavation and restoration work in the late 1800s, there has been a continuous maintenance of the ruins.