Fredriksvern or Stavern has probably been a harbor since ancient times. The name is found in written sources the 11th century and in the 12th century it is referred to as a good fishing harbor. The military activities in Stavern began with building of Staverns Fortress, part of a major construction of Norwegian Fortresses which took place from 1675 to 1679 under Christian IV. Citadellet Fort was built in the 1680s by count Fredrik Gyldenløve and had an important role during the last Nordic war from 1709 to 1720.
During the winter of 1748-1749 Fredrik V ordered construction of a shipyard and a drydock in Norway and in 1750 the first Norwegian naval command base was constructed. The king did so as a defensive measure in the event of a war with Sweden. A naval station in Norway could support land strength in the event of a Swedish invasion by cutting off naval transport of Swedish troops and supplies, reducing the risk of such an invasion. Fredriksværns Værft (the shipyard) was finished in 1750 and a number of vessels were built there, including a frigate in 1775. Fredriksvern Church was finished in 1756 as the garrison church in a style with influences from both Renaissance and Baroque.
The main base for the Common Fleet was at Copenhagen, but when Norway and Denmark split in 1814 Fredriksvern became the main base for the Royal Norwegian Navy. The Common fleet had been decimated by the British robbery in 1807 and the Norwegians got the lesser share of what was left when the union was ended. It soon became apparent that major expansion of the navy had to take place. Fredriksvern had one strategic flaw, it was difficult to defend from a land based attack. In addition its capacity was too small for the new expanded navy. Already in 1815 it was decided to look for a new location for the main naval base. But Norway was extremely poor and both the fleet expansion and the building of the new base was delayed. During the 1830s a new main naval base was constructed at Horten, but Fredriksvern continued to be an important naval base and remained active as an air force academy until 2002.References:
Krickenbeck moated castle is one of the oldest on the lower Rhine. Its history dates back to the year 1104, when the castle was first mentioned. It is unclear why the old castle, which was certainly inhabited by Count Reginar, was abandoned or destroyed. In the mid-13th century the castle was moved to the current location. At the end of the 14th century the new castle belonged to the Counts of Kleve.
Johann Friedrich II of Schesaberg converted the castle into a Baroque mansion between 1708-1721. On September 7, 1902, a fire destroyed the entire mansion. From 1903 to 1904, a three-winged castle was built in the Neo-Renaissance style. Today Krickenbeck is a conference center.