B.B.D. Bagh formerly called Dalhousie Square, is the shortened version for Benoy-Badal-Dinesh Bagh .It is the seat of power of the state government, as well as the central business district in Kolkata in the Indian state of West Bengal.
BBD bag stands for Binoy Badal Dinesh who were the freedom fighters and killed Inspector General of Prisons, N.S. Simpson, in the balconies of Writers' building. Previously the square had been named after Lord Dalhousie, Governor General of India from 1847 to 1856.
B. B. D. Bagh is considered to be the 'heart' of Kolkata as many famous buildings housing important businesses and banks are located here.
A heritage building right in the heart of Dalhousie Square, Kolkata (PIN 700001) housing the General Post Office. This two-storied Victorian style building with an impressive dome is a key landmark for Kolkata. Earlier Fort William was situated here. A long strip of brass on the eastern staircase of GPO is the reminiscent of initial Fort William of Kolkata.