Turku Cathedral is the Mother Church of the Evangelical Lutheran Church of Finland, and the country's national shrine. It is the central church of the Archdiocese of Turku and the seat of the Archbishop of Finland. It is also regarded as one of the major records of Finnish architectural history.
The cathedral was originally built out of wood in the late 13th century, and was dedicated as the main cathedral of Finland in 1300, the seat of the bishop of Turku. It was considerably expanded in the 14th and 15th centuries, mainly using stone as the construction material.
During the 15th century, side-chapels were added along the north and south sides of the nave, containing altars dedicated to various saints. By the end of the Middle Ages these numbered 42 in total. The roof-vaults were also raised during the latter part of the 15th century to their present height of 24 meters. Thus, by the beginning of the Modern era, the church had approximately taken on its present shape. The major later addition to the cathedral is the tower, which has been rebuilt several times, as a result of repeated fires. The worst damage was caused by the Great Fire of Turku in 1827, when most of the town was destroyed, along with the interior of both the tower and the nave and the old tower roof. The present spire of the tower, constructed after the great fire, reaches a height of 101 meters above sea level, and is visible over a considerable distance as the symbol of both the cathedral and the city of Turku itself.
In the reformation the cathedral was taken by the Lutheran Church of Finland (Sweden). Most of the present interior also dates from the restoration carried out in the 1830s, following the Great Fire. The altarpiece, depicting the Transfiguration of Jesus, was painted in 1836 by the Swedish artist Fredrik Westin. The reredos behind the High Altar, and the pulpit in the crossing, also both date from the 1830s, and were designed by german architect Carl Ludvig Engel, known in Finland for his several other highly regarded works. The walls and roof in the chancel are decorated with frescos in the Romantic style by the court painter Robert Wilhelm Ekman, which depict events from the life of Jesus, and the two key events in the history of the Finnish Church: the baptism of the first Finnish Christians by Bishop Henry by the spring at Kupittaa, and the presentation to King Gustav Vasa by the Reformer Michael Agricola of the first Finnish translation of the New Testament.
The cathedral was badly damaged during the Great Fire of Turku in 1827, and was rebuilt to a great extent afterwards.
References:Kristiansten Fortress was built to protect the city against attack from the east. Construction was finished in 1685. General Johan Caspar von Cicignon, who was chief inspector of kuks fortifications, was responsible for the new town plan of Trondheim after the great fire of 18 April 1681. He also made the plans for the construction of Kristiansten Fortress.
The fortress was built during the period from 1682 to 1684 and strengthened to a complete defence fortification in 1691 by building an advanced post Kristiandsands bastion in the east and in 1695 with the now vanished Møllenberg skanse by the river Nidelven. These fortifications were encircled by a continuous palisade and thereby connected to the fortified city. In 1750 the fortress was modernized with new bastions and casemates to protect against mortar artillery.