Troldborg Ring is a circular stronghold located on a hill crest, 70 meters above the Vejle river valley. It was surrounded by a rampart, which was 60 meters in diameter. The castle was built in the Iron Age, around 100-200 AD, and was used until the 5th century AD.
Gamleborg, also known as Gamleborg Viking Fortress, was the first fortress on the Danish island of Bornholm. Built around 750 AD, it was the seat of the kings of Bornholm during the Viking age (750–1050) and early Middle Ages (1050–1150). The massive fortress is 264 metres long from north to south and 110 metres wide from east to west, with gates to the north and southwest.
Fyrkat might be the oldest of Denmark’s former Viking ring castles. It is built on a narrow piece of land with a river on one side and swampy area on the others. It is designed as exact circle with four gates opposite to each other and connected by two wooden roads that cross in a right angle in the exact middle of the fort. A circle road gave access to the wall.
Roskilde Cathedral is the earliest major ecclesiastical building in brick in northern Europe and had a profound influence on the spread of brick for this purpose over the whole region. Roskilde Cathedral is an aisled basilica in Gothic style with a semi-circular chancel gallery. The structure is essentially in brick, with occasional use of small boulders in the interior. Externally the walls stand on a plinth of granite ashlars two courses high; in the interior there is a hollow chamfered plinth of the same material.
Ribe Cathedral is the oldest cathedral in Denmark. It became the only five-aisled cathedral in Denmark . Ribe Cathedral is Denmark’s best preserved Romanesque building.
Koldinghus Castle was founded in the 13th century .Over the course of time Copenhagen became the focal point of the political power and the outlying local royal residences were used less and less frequently . When Frederik IV became king he decided to remove most of the remaining surrounding walls leaving Koldinghus as it can be seen today.Today the restored castle functions as a museum containing collections of furniture from the 16th century to present, Roman and Gothic church culture, older Danish paintings, crafts focused on ceramics and silver and shifting thematized exhibitions.
Kronborg Castle is an outstanding example of the Renaissance castle.The result is a Renaissance palace that reflects the piecemeal nature of its construction, with only the west wing having a facade designed as an integrated whole. The interior of the castle presents the same heterogeneity of style and layout as the exterior.
The chapel, which was the only building not to have been ravaged by fire in 1629.
Charlottenborg Palace is a large mansion originally built as a residence for Ulrik Frederik Gyldenløve. It has served as the base of the Royal Danish Academy of Fine Arts since its foundation in 1754. Several other institutions of the Danish art world are also based at Charlottenborg, which today also serves as an exhibition space for art exhibitions, which is called Kunsthal Charlottenborg. Charlottenborg is a four-winged, three-storey building designed in the Dutch Baroque style but also with some Italian influence.
References and credits :
History Of European Architecture 