[1][2] Maharaja Radha Kishore Manikya brought about the separation of Police and Revenue Departments.

Although in dire financial condition on account of a devastating earthquake the king pledged his daughter in law's jewellery to anonymously sponsor the scientific research of Jagadish Chandra Bose.

[4] Ujjayanta Palace was built by Maharaja Radha Kishore Manikya during 1899–1901[5] at a cost of 10 lakh (1 million) rupees[6] despite financial constraints.

[7] The earlier royal palace of the Kingdom of Tripura was located 10 km (6 mi) away from Agartala.

[1] He set up the R.K.I.school of Kailashahar besides donating funds towards construction of Victoria college of Comilla in Bangladesh.