Medieval castles in Norway

Akershus Fortress

Akershus Fortress or Castle is a medieval castle that was built to protect Oslo, the capital of Norway. The first construction on the castle started around the late 1290s, by King Haakon V, replacing Tønsberg as one of the two most important Norwegian castles of the period (the other being Båhus). It was constructed in response to the Norwegian nobleman, Earl Alv Erlingsson of Sarpsborg’s earlier attack ...
Founded: 1290s | Location: Oslo, Norway

Bergenhus Fortress

Bergenhus fortress is one of the oldest and best preserved castles in Norway. It contains buildings dating as far back as the 1240s, as well as later constructions built as recently as World War II. The extent of the enclosed area of today dates from the early 19th century. In medieval times, the area of the present-day Bergenhus Fortress was known as Holmen (The islet), and contained the royal residence in Bergen, as wel ...
Founded: 1240s | Location: Bergen, Norway

Tønsberg Castle Ruins

Dating in 871, Tønsberg is commonly believed to have been the oldest Norwegian town and one of the oldest recorded fortified locations in Norway. According to Snorri Sturluson, Tønsberg was founded before the Battle of Hafrsfjord under which King Harald I of Norway united Norway under his rule. Tønsberg was an important trading center and site of Haugathing, the Thing (assembly) for Vestfold and one o ...
Founded: 871 AD | Location: Tønsberg, Norway

Sverresborg Castle Ruins

Sverresborg was built by king Sverre Sigurdsson (ca. 1150-1202) in the mid 1180s, 250 meters northeast of Bergenhus fortress. King Sverre Sigurdsson also had a Sverresborg built in Trondheim. It is thought that the fortress had an outer wall of stone and inner buildings of wood. A saga mentions that 600 men and 40 noble women lived in the fortress ca. 1207.Sverresborg was the site of several battles during the Civil war e ...
Founded: 1180s | Location: Vågen, Norway

Vardøhus Fortress

In 1251, an embassy from the Republic of Novgorod to King Haakon IV Haakonson of Norway complained of clashes between the Norwegians and the Karelians in northern Finnmark. A Norwegian embassy was dispatched to Novgorod where a treaty (the original of which is unfortunately now lost) was signed to conclude a peace between the two countries, including the Novgorod tributary land of Karelia. The first fortification was erec ...
Founded: 1306 | Location: Vardø, Norway

Steinvikholm Castle

Steinvikholm Castle is an island fortress built between 1525 to 1532 by Norway"s last Catholic archbishop, Olav Engelbrektsson. Steinvikholm castle became the most powerful fortification by the time it was built, and it is the largest construction raised in the Norwegian Middle Ages. The castle occupies about half of the land on the rocky island. The absence of a spring meant that fresh water had to be brought from ...
Founded: 1525-1532 | Location: Stjørdal, Norway

Sverresborg Castle Ruins

Sverresborg or Sverre Sigurdsson"s castle was a fortification built in the medieval city of Nidaros (later Trondheim). It should not be confused with Sverresborg in Bergen. Sverre Sigurdsson was king of Norway from 1184-1202. In the winter of 1182/1183 he initiated construction of Sverresborg (one of the earliest Norwegian fortresses) to provide him a more secure and more easily defended base from which to work. The ...
Founded: 1182-1183 | Location: Trondheim, Norway

Isegran Fortress Ruins

Isegran is the first place in Fredrikstad mentioned in history. The Earl of Borgarsyssel, Alv Erlingsson, also called MindreAlv, had a small fortress on Isegran in the late 1200s. In the 1670s, the island was fortified with a large battery platform, Isegran tower, and later a small fort was built to protect the river. Until 1685 Isegran was the royal shipyard for the danish-norwegian fleet and during the Great Northern Wa ...
Founded: 13th century | Location: Fredrikstad, Norway

Audunborg Castle Ruins

Audunborg or Hegrenes-borga castle was built in stone from 1276 to 1286 probably by English craftsmen from Bergen. The rectangular building was 22 by 13 metres and had three stories. There was a store room in the ground floor, living quarters on the next floor, and a feast hall in the top floor. It had large windows and arches. The building itself had water on three sides and was thus easy to defend. It is also thought th ...
Founded: 1276-1286 | Location: Jølster, Norway

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Naveta d'Es Tudons

The Naveta d"Es Tudons is the most remarkable megalithic chamber tomb in the Balearic island of Menorca. 

In Menorca and Majorca there are several dozen habitational and funerary naveta complexes, some of which similarly comprise two storeys. Navetas are chronologically pre-Talaiotic constructions.

The Naveta d"Es Tudons served as collective ossuary between 1200 and 750 BC. The lower chamber was for stashing the disarticulated bones of the dead after the flesh had been removed while the upper chamber was probably used for the drying of recently placed corpses. Radiocarbon dating of the bones found in the different funerary navetas in Menorca indicate a usage period between about 1130-820 BC, but the navetas like the Naveta d"Es Tudons are probably older.

The shape of the Naveta d"Es Tudons is that of a boat upside down, with the stern as its trapezoidal façade and the bow as its rounded apse. Its groundplan is an elongated semicircle. Externally, the edifice is 14.5 m long by 6.5 m wide and 4.55 m high but it would originally have been 6 m high.

The front, side walls and apse of the edifice consist of successive horizontal corbelled courses of huge rectangular or square limestone blocks dressed with a hammer and fitted together without mortar, with an all-round foundation course of blocks of even greater size laid on edge.