Raj Bhavan is the official residence of the Governor of West Bengal, located in the capital city Kolkata. Built-in 1803, it was known as Government House before the independence of India.

St. John Church, originally a Cathedral constructed in between 1784 and 1787. It is the 1st public building constructed by the East India Company.

Calcutta High court is the oldest in India, constructed in neo-Gothic style, it was opened in 1872. In fact, the building of the Calcutta High Court was constructed years after the foundation of the court itself. Construction of the High Court building started in 1864.

The Great Eastern Hotel (officially The Lalit Great Eastern Kolkata) is a colonial-era hotel. The hotel was constructed in 1840 or 1841; at a time when Calcutta, the seat of the East India Company, was the most important city in India.

General Post Office is another landmark of the city. The site where the GPO is located was actually the site of the first Fort William. An alley beside the post office was the site of the guardhouse that housed the Black Hole of Calcutta (1756). The GPO was designed by Walter B.Grenville (1819-1874. This is probably the only remaining of the ancient fort of Calcutta.

The Writers' Building, often shortened to just Writers', is the official but currently unused secretariat building of the state of West Bengal in Kolkata, India. 150-meter long building covers the entire northern stretch of the iconic Lal Dighi pond at the center of historic B.B.D. Bagh, was long been considered the administrative and business hub of the city. It originally served as the principal administrative office for writers (junior clerks) of the British East India Company (EIC). Designed by Thomas Lyon in 1777. it housed the office of the Chief Minister of West Bengal, cabinet ministers, and other senior officials, until 4 October 2013, when a major restoration of the building was announced.