Gateway of India is a national heritage building in India that is located at the waterfront in Apollo Bunder area in South Mumbai, facing Arabian Sea. It was built as a tribute for Queen Mary and King George V, who were on an official visit to Mumbai in 1911. Opened for public on 4 December 1924 by the Viceroy, the Earl of Reading, Gateway of India is considered to be the most famous monument in Mumbai.The gateway is built from reinforced concrete and yellow basalt andepitomises the combination of Hindu and Muslim styles of architecture. The central dome in the gateway has a diameter of 15 m and the arch way is 26 m high. From this gateway, people can take a ferry boat to Elephanta Caves, or luxury boats that take visitors around the harbour. To the front of the gateway is a statue of Chhatrapati Shivaji.Travellers can reach the Gateway of India by hiring taxis, autos, or by boarding buses from elsewhere in the city; be it city centre, downtown or the suburbs.