Citibank is one of the largest banks in the world. It has numerous branches in the New York City metropolitan area and thousands of offices throughout the world. The bank's history dates from June 16, 1812, when the New York state legislature granted a charter to the City Bank of New York. The bank entered the national system in 1865. In 1955, the National City Bank merged with the First National Bank of the City of New York to form the First National City Bank of New York. The name of the bank was changed to Citibank in 1976. The bank is a subsidiary of Citigroup, a multinational financial services organization.