Though archaeological findings suggest they have been inhabited since the Stone Age, the seven islands which came to be Mumbai were originally fishing settlements over 500 years ago, until the Portuguese and eventually British took over. This is why there are countless religious temples and landmarks that you can see in Free Tours in Mumbai. Among the most popular is Elephanta Island, the maze of caves being a fantastic example of stone carving. Dating back as early as AD450, the caves are a UNESCO World Heritage Site. Another, the Iskcon Temple, should be visited during prayer time to see frenzied drums and dancing in a sea of color. Other famous locations include the City Hall, St. Thomas Cathedral, Mumbai Stock Exchange, the Reserve Bank of India, the Horniman Circle Gardens and the National Gallery of Modern Art. You can end your walk at Marine Drive, a beautiful long seafront with stunning views.