The Calcutta High Court is the oldest High Court in India. It was established as the High Court of Judicature at Fort William on 1 July 1862 under the High Courts Act, 1861. It has jurisdiction over the state of West Bengal and the Union Territory of the Andaman and Nicobar Islands. It was preceded by the Supreme Court of Judicature at Fort William. The High Court building is an exact replica of the Cloth Hall, Ypres, in Belgium.
The court has a sanctioned judge strength of 63. Despite the name of the city having officially changed from Calcutta to Kolkata in 2001, the old name is retained by the court as it is an institution.

Source: http://en.wikipedia.org/wiki/Calcutta_High_Court