San Fernando, officially the City of San Fernando, is the most populous city and second most populous municipality in Trinidad and Tobago, after Chaguanas. Sando, as it is known to many local Trinidadians, occupies 19 km2 and is located in the southwestern part of the island of Trinidad. It is bounded to the north by the Guaracara River, the south by the Oropouche River, the east by the Sir Solomon Hochoy Highway, and the west by the Gulf of Paria.