To the South of Kalyana Mandapam the Elephant tank is situated. Even now it is called the Elephant tank since it is so big that it can accommodate elephants.
Steps are provided in the Southwest corner of the tank so that elephants could climb down and get out easily, say historians.
The tank measures 58 meters long, 40 meters wide and 15 meters deep. On the four sides of the tank, a cloister mandapa with 134 stone pillars has been constructed. Some historians hold the view that this tank would have been used as a swimming pool by kings, royal family, relatives of kings and generals.
This is a granite building in wagon shape roof to the West of the elephant tank. This place was used to do physical exercise. This place, in those times was used to secretly train sepoys and to preserve the war weapons.
Inside the fort there is a Kalyana Mahal, which has a pyramid like sturcture at the top, built in Indo-Islamic style. It is very beautiful and it attracts the hearts of the visitiors. The mahal is so wonderful in its structures and has rooms for women's stay, a pond of three square meter, built with curved verandahs, with windows, stair cases on either side of each floor. Moreover terracotta pipes are fixed on the inner wall of the mahal for water to come in.
The Granary is located on the left side of the first entrance of Rajagiri fort. The granite walls are built about 2 meters wide. The roof of the granary is built in the shape of the arch, which stands storing. The granary with a capacity of 1,50,000 kalam a granary for paddy/rice and another for grains
To the west of the gymnasium pond there is square shaped stage. There is a deep pit at the central part of the stage and built a square shaped wall surrounding the central part. This was used for storing the explosives.
Rooms made up of granite with arches are built in West and North of the mahal. It is said that these rooms were built for the kings and queens and servants to stay and horse stable was built at the backs of the servants room.
Swaroop Singh, who belonged to Rajaput dynasty became one of the captains of the Moghal's armies. At the end ot 17th century A.D. Swaroop Singh was enthroned as a ruler of Gingee by the Delhi emperor. Desing was the son of the couple Swaroop Singh and his wife Ramabai.
Desing being a solitary player in his palace, Swaroop Singh felt that his son needs a suitable comparing to play with him. Therefore he selected and adopted Mohammed khan as a suitable intelligent friend to his son. Mohammed khan was the son of Palayakkar of valuthavaur.
Desing and Mohammed khan became friends. Later they practiced all royal sports and became well qualified for the kingship.
A Mosque facing towards East, adjacent to Kalyan Mahal (Rani Mahal) was built with lime mortar and bricks in the palace grounds as a worship place for his dear friend Mohammed khan.
The mosque of 7.70 meters in length, 6 meters in breadth and 12 meters in height is now in ruined condition and this is not appearing as a monument today.