Agartala is the capital and the largest city of the Indian state of Tripura, situated on the banks of Haora/Saidra River, about 2 kilometres east …Agartala is the capital and the largest city of the Indian state of Tripura, situated on the banks of Haora/Saidra River, about 2 kilometres east of the border with Bangladesh and about 2,499 km from the national capital, New Delhi. According to 2022 AMC data, Agartala is the third most populous city after Guwahati and Imphal in Northeast India. It is India's third international internet gateway and being developed under the Smart Cities Mission.