Helme church parish was first mentioned in 1329 during a Lithuanian raid. Most of the neighbouring land was fiefed in the 15th–16th centuries. Livonian Order castle in Helme (Ordensburg Helmet) was probably built in the first half of the 14th century. The site on a steep hill is belived to have been used as a stronghold earlier by Sackalians in the Ancient Estonia. By its ground plan the order castle was 120×60 m oval shaped structure, surrounded by two moats. There was a borough beside the castle in the Middle ages, it was mentioned until the 17th century. The castle was destroyed by the Swedes during the Russo-Swedish War in 1658. Nowadays only parts of the walls with high window holes have survived.
Lübeck Cathedral is a large brick-built Lutheran cathedral in Lübeck, Germany and part of the Lübeck UNESCO World Heritage Site. In 1173 Henry the Lion founded the cathedral to serve the Diocese of Lübeck, after the transfer in 1160 of the bishop's seat from Oldenburg in Holstein under bishop Gerold. The then Romanesque cathedral was completed around 1230, but between 1266 and 1335 it was converted into a Gothic-style building with side-aisles raised to the same height as the main aisle.
On the night of Palm Sunday (28–29 March) 1942 a Royal Air Force bombing raid destroyed a fifth of the town centre. Several bombs fell in the area around the church, causing the eastern vault of the quire to collapse and destroying the altar which dated from 1696. A fire from the neighbouring cathedral museum spread to the truss of the cathedral, and around noon on Palm Sunday the towers collapsed. An Arp Schnitger organ was lost in the flames. Nevertheless, a relatively large portion of the internal fittings was saved, including the cross and almost all of the medieval polyptychs. In 1946 a further collapse, of the gable of the north transept, destroyed the vestibule almost completely.
Reconstruction of the cathedral took several decades, as greater priority was given to the rebuilding of the Marienkirche. Work was completed only in 1982.
The cathedral is unique in that at 105 m, it is shorter than the tallest church in the city. This is the consequence of a power struggle between the church and the guilds.
The 17 m crucifix is the work of the Lübeck artist Bernt Notke. It was commissioned by the bishop of Lübeck, Albert II. Krummendiek, and erected in 1477. The carvings which decorate the rood screen are also by Notke.
Since the war, the famous altar of Hans Memling has been in the medieval collection of the St. Annen Museum, but notable polyptychs remain in the cathedral.
In the funeral chapels of the southern aisle are Baroque-era memorials by the Flemish sculptor Thomas Quellinus.