The old castle was demolished and constructed after the design of Bartolomeo Rastrelli started in 1736. Construction proceeded slowly because part of the materials and resources were transferred to the construction of Jelgava Palace, a project which was more important for the duke.
The old castle was demolished and rebuilt according to the design of Bartolomeo Rastrelli, beginning in 1736. Construction progressed slowly due to materials and resources being diverted to the construction of Jelgava Palace, a project deemed more significant by the duke.