B.B.D. Bagh is still the commercial and political center of all of East India and many of the business and political institutions from the colonial era still exist. The centerpiece is the Writers' Building which is the secretariat of the Government of the State of West Bengal and houses the office of the Chief Minister of West Bengal. To the west lie the General Post Office, the Royal Insurance Building, the eastern office of the Reserve Bank of India, the headquarters of the Eastern Railway, head office of the Kolkata Port Trust and a number of other government offices. The native name of the area is '"Office Para"'. To the north lie the Royal Exchange Building which houses the Bengal Chamber of Commerce and Industry, the Calcutta Stock Exchange, the Standard Chartered Building and many financial establishments. The eastern end also houses a number of offices till Chittaranjan Avenue. The south area of the square is home to the Raj Bhavan, which is now the residence of the governor and the former residence of the viceroy and governor-general of India. A number of former British colonial administrative offices, including the former foreign and military secretariats, the Treasury Office, the Telegraph Office and Kolkata Town Hall can be found here. This area is also a major commercial district with the offices of HSBC at Hong Kong House and the Great Eastern Hotel.