Landskrona Citadel was initially built 1549–1559 as a purely defensive fortification with two complete moats, the inner with a width of 70 metres. The outer (complete) moat is between 40 and 70 metres wide, and has cross fire bastions for artillery and guns. Outside the outer moat, a third narrower moat covers the northwest and northeast. There also exist remains of a fourth moat (between the two outer moats). The fortifications and moats system surrounding the castle is known to be one of Europe's largest and best preserved. In the area between the outer and far outer moat resides the oldest area of allotment-garden cottages of Sweden.
Landskrona was captured in 1644 by forces led by Gustav Horn, but returned to Danish possession the year after. It became Swedish again in 1658 as a result of the Treaty of Roskilde. Between 1667 and 1675, the citadel was expanded with extensive bastions. Thus on 2 August 1676, during a new war between Sweden and Denmark, the commandant Hieronymus Lindeberg surrendered himself and the castle to a Danish army unit. Until peace was restored in 1679, the castle was used as a center of command by the Scanian voluntary army corps ("Friskydter" in Danish-Scanian history, "Snapphanar" in Swedish) which fought together with the regular Danish army against the Swedish occupiers. Lindeberg survived the Danes but were later executed on order of Swedish king Charles IX. In the middle of the 18th century, the local military commander feared (quite suddenly) that the 15th century church Johannes Babtistæ Kyrka ("John the Baptist church"), which at the time was the second largest in Scania, must be destroyed. The reason was a fear for enemy cannons in the church tower. The whole church was demolished and a new one, Sofia Albertina, was built some decades later.
The castle was used as a women's prison from the late 19th century and some decades later. Today the castle is both a kind of museum (guided tours only, but not expensive, daily during the summer) and can be rented for private parties.
References:The Basilica of Santa Maria in Trastevere is one of the oldest churches of Rome. The basic floor plan and wall structure of the church date back to the 340s, and much of the structure to 1140-43. The first sanctuary was built in 221 and 227 by Pope Callixtus I and later completed by Pope Julius I.
The inscription on the episcopal throne states that this is the first church in Rome dedicated to Mary, mother of Jesus, although some claim that privilege belongs to the Basilica di Santa Maria Maggiore. A Christian house-church was founded here about 220 by Pope Saint Callixtus I (217-222) on the site of the Taberna meritoria, a refuge for retired soldiers. The area was made available for Christian use by Emperor Alexander Severus when he settled a dispute between the Christians and tavern-keepers.
The church underwent two restorations in the fifth and eighth centuries and in 1140-43 it was re-erected on its old foundations under Pope Innocent II.