Aggersborg is the largest of Denmark's former Viking ring castles, and one of the largest archeological sites in Denmark. It consisted of a circular rampart surrounded by a ditch. Four main roads arranged in a cross connected the castle centre with the outer ring. The roads were tunnelled under the outer rampart, leaving the circular structure intact.
The ring castle had an inner diameter of 240 metres. The ditch was located eight metres outside of the rampart, and was approximately 1.3 metres deep. The wall is believed to have been four metres tall. The rampart was constructed of soil and turf, reinforced and clad with oak wood. The rampart formed the basis for a wooden parapet. Smaller streets were located within the four main sections of the fortress.
The modern Aggersborg is a reconstruction created in the 1990s. It is lower than the original fortress.
Dating the structure has proven difficult, since the archaeological site has also been the site of an Iron Age village. The ring castle is believed to have been constructed around 980 during the reign of king Harold Bluetooth and / or Sweyn Forkbeard. Five of the six ring castles in historical Denmark have been dated to this era. The structure was completed within one or two years, and only used for a short period of time; between five and twenty years.
Archaeologists have estimated that the ring castle could hold a 5,000-man garrison, located in 48 longhouses. Twelve longhouses were located in each quadrant, all located on a north-south or west-east axis. No remains of the actual houses exist, but proof of the location of the walls has been found. The individual houses are believed to have been similar to the form seen on the Camnin chest, a house-shaped reliquary, as well as on house-shaped tombstones in England.
The houses had curved roofs and curved sides, similar to the form of a ship; 32.5 metres long and 8.5 metres across. They were divided in a long inner hall, around 19 metres long, with smaller rooms at the end. It is estimated that construction of a single Aggersborg house required 66 large oak trees. The entire structure, housing included, is estimated to have used 5,000 large oaks.
A large number of archaeological finds have been discovered on the site, including many imported luxury items. Examples include beads of mountain crystal and pieces of glass jars. A damaged golden ring has been discovered on the site as well; a replica is displayed in the Aggersborg museum.
No conclusive data yet exists whether Aggersborg was a stronghold controlling trade routes or whether its primary function was as a barracks / training grounds in connection with Sweyn Forkbeard's Viking raids on England.References:
Kroměříž stands on the site of an earlier ford across the River Morava. The gardens and castle of Kroměříž are an exceptionally complete and well-preserved example of a European Baroque princely residence and its gardens and described as a UNESCO World Heritage Site.
The first residence on the site was founded by bishop Stanislas Thurzo in 1497. The building was in a Late Gothic style, with a modicum of Renaissance detail. During the Thirty Years' War, the castle was sacked by the Swedish army (1643).
It was not until 1664 that a bishop from the powerful Liechtenstein family charged architect Filiberto Lucchese with renovating the palace in a Baroque style. The chief monument of Lucchese's work in Kroměříž is the Pleasure Garden in front of the castle. Upon Lucchese's death in 1666, Giovanni Pietro Tencalla completed his work on the formal garden and had the palace rebuilt in a style reminiscent of the Turinese school to which he belonged.
After the castle was gutted by a major fire in March 1752, Bishop Hamilton commissioned two leading imperial artists, Franz Anton Maulbertsch and Josef Stern, arrived at the residence in order to decorate the halls of the palace with their works. In addition to their paintings, the palace still houses an art collection, generally considered the second finest in the country, which includes Titian's last mythological painting, The Flaying of Marsyas. The largest part of the collection was acquired by Bishop Karel in Cologne in 1673. The palace also contains an outstanding musical archive and a library of 33,000 volumes.
UNESCO lists the palace and garden among the World Heritage Sites. As the nomination dossier explains, 'the castle is a good but not outstanding example of a type of aristocratic or princely residence that has survived widely in Europe. The Pleasure Garden, by contrast, is a very rare and largely intact example of a Baroque garden'. Apart from the formal parterres there is also a less formal nineteenth-century English garden, which sustained damage during floods in 1997.
Interiors of the palace were extensively used by Miloš Forman as a stand-in for Vienna's Hofburg Imperial Palace during filming of Amadeus (1984), based on the life of Wolfgang Amadeus Mozart, who actually never visited Kroměříž. The main audience chamber was also used in the film Immortal Beloved (1994), in the piano concerto scene.