The city is known for its harbour, for its natural setting in the Cape Floristic Region, and for landmarks such as Table Mountain and Cape Point. Until the Witwatersrand Gold Rush and the development of Johannesburg, Cape Town was the largest city in South Africa. Located on the shore of Table Bay, Cape Town, as the oldest urban area in South Africa, was developed by the United East India Company (VOC) as a supply station for Dutch ships sailing to East Africa, India, and the Far East. Cape Town outgrew its original purpose as the first European outpost at the Castle of Good Hope, becoming the economic and cultural hub of the Cape Colony. Until the Witwatersrand Gold Rush and the development of Johannesburg, Cape Town was the largest city in South Africa.