This Rajas of Cochin used to conduct their durbars in this impressive building located within the Durbar Hall grounds. It was later converted to a museum which has a treasure trove of archaeological findings and relics including old coins, sculptures, oil paintings and murals. The building has been taken over by the Kerala Lalitha Kala Academy and now houses the Gallery of Contemporary Art. All the exhibits of the museum have been moved to the Hill Palace museum.