The park is a unique monument of European nature history. The park territory covers 16 ha, distributed in 19 floristic areas. Maximilian von Sivers (1857-1919), the owner of the Skriveri manor, planted the trees by growing them of seeds, harvested in their natural distribution areas from the whole world. It was the first experiment in the Baltic of such a large importance. About 250 peregrine tree and bush species have remained until nowadays.
The visitors to the park can see the stairs of the castle, a card-game table of stone, a fountain and the remains of the castle fence.