Besides Rastrelli (who, with the death of his patroness, the Empress Elizabeth, lost business in Saint Petersburg), Danish architect Severin Jensen participated in the project, giving the palace a touch of classicism.
Udover Rastrelli, der med sin afdøde mæcen Elisabeth af Rusland mistede forretninger i Sankt Petersborg, deltog den danske arkitekt Severin Jensen i projektet, hvilket giver slottet et strejf af klassicisme.