It must be mentioned that there is no such monument in earth like that of the Vellore owing to its architectural significance. The fort has a channel where it is believed that thousands of crocodiles swarmed once. The walls of the fort have double walls which were intended to protect it from enemy. The structure was mainly built with granite acquired from the Arcot and Chittor regions. The entire fort is situated is over an area of around 133 acres at a height of 220 of the nearest mountain range.