[1] Brynolf Algotsson, Bishop of the Diocese of Skara, laid the foundations for a fortified castle in 1298 originally as a fort that consisted of two or three houses surrounded by a wall.

Field Marshal de la Gardie embarked on an extensive building spree, including the third floor of the keep.

The portal to the main courtyard was added during his period, as were the frescos depicting people and winding plants found in niches, stairwells and the rooms on the third floor.

[3] In 1654, Count Magnus Gabriel De la Gardie (1622–1686) initiated major construction projects at Läckö.

A fourth floor was built in the main building and a number of artists were hired to decorate the walls and ceilings of the castle.