Sangeetha Mahal, situated within the Thanjavur Palace, is one the main attractions of Thanjavur. Sangeetha Mahal or the Hall of Music was built in the early 1600's during the reign of the Nayak King Sevappa Nayak. It was known by the name 'Navaratnamanamaina Nataka Sala' (the Theatre adorned with gems). This theatre was later renamed as 'Sangeetha Mahal’ during the reign of the Marathas.Sangeetha Mahal is noted for its architectural and acoustic properties. It is a rectangular hall with a vaulted roof with four pankahs and several decorations such as chandeliers. The hall was constructed in such a way that there is a balanced absorption and deflection of sound waves. The hall is also devoid of excess amplification. The water-pool in front of the stage as well as the decorations and perforations also helped in the deflection of sound waves.