The 45 feet tall Art Gallery overlooks the St. Thomas Lake. The winding wall of this structure is adorned with a good number of art works that are intricate miniatures of different facets of the history of ancient Kerala. The ground floor houses a beautiful painting of St. Thomas who touches the wound of the resurrected Jesus Christ. Paintings of St. Gregorios of Parumala, the Mother Teresa and St.Mary are kept in the next three floors. The top floor is installed with a full size statue of St. Thomas. The convincing references from Travancore State Manual, a Govt. publication and golden verses from the Bible are exhibited in two boards kept inside the gallery.