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 erected by Haakon V Magnusson in 1306 and was called Varghøya. It is not known how long this fort was manned, but in 1307 the Archbishop of Trondhjem went to Vardøhus to consecrate the new Vardø Church. The earliest record still extant which defines the border between Norway and Russia is from 1326. In 1340, records show the Archbishop made further efforts to improve conditions there.
The second fortification to be built was in Østervågen (the 'East Bay') which was erected between 1450 and 1500. This fortification was rectangular with two corner bastions. It appears on various maps from the 14th and 15th century.The Captain of Vardøhus owned a share of the fishery.
By the 1730s, Vardøhus had become decrepit. The seat of government of Finnmark was transferred from Vardøhus to Altengaard. Major upgrades to the current fortress began in 1738. Vardøhus never saw enemy action until the 20th century. The last time the fortifications were on active anti-invasion duty was during the First World War. During the period from the beginning of the Second World War to the German invasion of Norway Vardøhus Fortress was an active unit under the command of Naval District no. 3 in Tromsø.
During the immediate post-war period, from 1945 to 1947, the fortress was demilitarised and used as a prison for people convicted of treason in the post-war legal purge. In 1947, Vardøhus was returned to fortress status manned by a commander and a few privates. The command of the fort is now the responsibility of the Royal Norwegian Navy, with a commander and four soldiers stationed there. Today the fort has few practical military purposes and serves primarily as a salute fortress, firing gun salutes on Norwegian Constitution Day (17 May), dissolution of the Union with Sweden Day (7 June) and on all royal birthdays.
The fortress is unique for the fact that on the winter day that the sun can again be seen from the fortress walls after the period of continuous darkness the fortress guns fire a two round salute. The gun shots announce to the school pupils of Vardø that they have the rest of the day off in celebration of the return of the sun.
References:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.