The glory of the palace rests on the large number of murals, executed in the best traditions of Hindu temple art, which are religious, decorative and stylised. The murals have been painted in rich warm colours in tempera technique
The king’s bedchamber or Palliyara, to the left of the entrance and occupying the southwest corner of the Palace, is noteworthy with its low wooden ceiling and 300 sq ft of wall surface covered with about 48 paintings. These illustrate the Ramayana, from the beginning of the sacrifice of Dasaratha to Sita’s return from captivity in Lanka. The paintings in this section are the earliest in the palace, dating back to the 16th century. The last five scenes are from the ‘Krishna Lila’ where in a cheerful God Krishna using his six hands and two feet to engage in foreplay with eight happy milkmaids. The paintings are attributed to the artistic bent of mind of Veera Kerala Verma.
The upper staircase rooms, notably that of the coronation hall that was extended under Dutch patronage, contain some murals. The notable compositions in this section are Lakshmi seated on the lotus, sleeping Vishnu (Anantasayana murti), Shiva and Parvati seated with Ardhanariswara and other goddesses, the coronation of Rama, and Krishna lifting Mount Govardhana.
On the opposite side of the coronation hall is the staircase room or Kovinithalam (Room No II), with a descent to the lower storey, there are four paintings of Shiva, Vishnu and Devi, and one incomplete. Room No. IV depict scenes from Kumarasambhava and other works of the great Sanskrit poet Kalidasa. The latter set of paintings belong to the eighteenth century.