The castle had a typically Serlian entrance arch and was encircled by moats (up to 17 meters in width). One wing of the building accommodated the arsenal and stables; another was immediately contiguous to the city wall. In 1606, a garden was laid out next to the hetman's residence. It contained a menagerie with wisents, deers, and chamois. The palatine chapel was consecrated in 1640.