The architect of the building is not identified with certainty, but is assumed to have been Mrs. Schøller's cousin, Admiral Christian Lerche (1712–93).
Many of the artisans and artists responsible for the interior decorations are also unknown.
The palace is built in the Baroque style, but has elements of Rococo and neoclassicism.
It has around 140 rooms constituting 4000 m² (43000 ft²) and is probably the largest wooden palace in Northern Europe.
A large part of the garden was separated as a public park in 1906.
It was originally laid out in the Baroque style and contained both an orangery and an arbor.

The exterior is mostly in its original form.
In 1841 some of the dormer windows were removed after a small fire, but those on the garden side are still in place.
The orchestra annex by the ballroom was built for the planned coronation of King Oscar I in 1847.
The original quarter pane windows were replaced in 1860.
However, some of the original windows are still in place in the southern wing on the garden side.

Unlike the exterior, the interior has changed significantly.
The interior of the side wings has been extensively rearranged, and all the rooms in the building have been renovated several times.
However, some original features are still present.
The Rococo style stucco work was preserved on some of the ceilings and around the wall niches.
The supraportes (panels above the doors)  are decorated with painted landscapes.
Several of the original wall decorations are preserved, some with Chinoiseries.
In the dining room, one can see paintings of cityscapes made after contemporary English copper engravings.
The ceiling and the supraportes in the ballroom were painted in 1847, probably using drawings by architect Heinrich Ernst Schirmer who worked with the interiors at the Royal Palace in Oslo.
The painted floors and ceilings in the other rooms are mostly from 1847 as well.
The interior of the Queen’s salon was designed for the coronation in 1906 by architect Ingvald Alstad.
The architect of the building is not identified with certainty, but is assumed to have been Mrs. Schøller's cousin, Admiral Christian Lerche (1712–93). Many of the artisans and artists responsible for the interior decorations are also unknown. The palace is built in the Baroque style, but has elements of Rococo and neoclassicism. It has around 140 rooms constituting 4000 m² (43000 ft²) and is probably the largest wooden palace in Northern Europe. A large part of the garden was separated as a public park in 1906. It was originally laid out in the Baroque style and contained both an orangery and an arbor.
The exterior is mostly in its original form. In 1841 some of the dormer windows were removed after a small fire, but those on the garden side are still in place. The orchestra annex by the ballroom was built for the planned coronation of King Oscar I in 1847. The original quarter pane windows were replaced in 1860. However, some of the original windows are still in place in the southern wing on the garden side.
Unlike the exterior, the interior has changed significantly. The interior of the side wings has been extensively rearranged, and all the rooms in the building have been renovated several times. However, some original features are still present. The Rococo style stucco work was preserved on some of the ceilings and around the wall niches. The supraportes (panels above the doors)  are decorated with painted landscapes. Several of the original wall decorations are preserved, some with Chinoiseries. In the dining room, one can see paintings of cityscapes made after contemporary English copper engravings. The ceiling and the supraportes in the ballroom were painted in 1847, probably using drawings by architect Heinrich Ernst Schirmer who worked with the interiors at the Royal Palace in Oslo. The painted floors and ceilings in the other rooms are mostly from 1847 as well. The interior of the Queen’s salon was designed for the coronation in 1906 by architect Ingvald Alstad.
Stiftsgården