 The Saraswathi Mahal Library , established around 1700 and located in the premises of the palace , contains over 30 @,@ 000 Indian and European manuscripts written on palm leaf and paper . Over eighty per cent of its manuscripts are in Sanskrit and many of them are on palm leaves . The Tamil works include treatise on medicine , and commentaries on Sangam literature . The Rajaraja Chola art gallery is located inside the palace – it has a large collection of stone and bronze images from the ninth to 12th centuries . Most of the idols present in the gallery were collected from various temples in the Thanjavur district . The <unk> Park is situated to the east of the Brihadeeswarar Temple and encompasses the <unk> Tank believed to have been built by the king Raja Raja Chola . It was created as a people 's park by the Tanjore municipality in 1871 – 72 . It has a collection of plants , animals and birds and serves as a zoo for children within the city . 
