Captain Bailey’s Dungeon is a citadel with measurements of 30.5m x 12.2m built of brick and mortar. On a lifted platform close to the citadel wall is the castle wherein Tipu's prisoners of conflict have been imprisioned. In the underground of the jail hooks at the partitions on to which the prisoners hands have been chained can be visible. The fort became named after Colonel Bailey who handed away here in 1780 A.D. During the navy blockade at Srirangapatnam a cannon rolled again piercing the ceiling and fell into the dungeon that could nonetheless be seen here.
The word Dungeon is morbid and imagination inspires of prisoners suffering inside the darkish dungeons. There are shoulder height stone slabs constant at the East, North and West walls with holes. The captives would be chained on the wrists and tied to the slab with waist deep bloodless water. This dungeon become used to imprison Captain Baird, Colonel Brithwite, Captain Rulay, Frazer, Samson and Lindsay through Tipu Sultan.