General Post Office

Built on the site of the old Fort William, the GPO is the office of the Kolkata Postal Service. The building itself is defined by tall white columns, a towering dome and a clock on its facade. The pronounced structure has become an important landmark in the city center. Located close to Writers' Building in BBD Square, it also houses a postal museum and a philatelic library that are worth visiting. An interesting fact about the building is that it is said to be the site of the Black Hole of Calcutta, where British prisoners were held after the Fort was captured by Siraj-ud-Daulah. In spite of being around for years, the building is a pure, flawless white structure that stands out among its surroundings.