Chhatrapati Shivaji Maharaj Vastu Sangrahalaya

This is Mumbai's crown jewel museum, sitting right near the Gateway of India in a stunning Indo-Saracenic domed building that's part of a UNESCO World Heritage Site. Inside, you'll find an enormous collection spanning ancient Indian art, natural history, and decorative arts from across the subcontinent. The architecture alone is worth the trip — a beautifully blended mix of Mughal, Maratha, and British colonial styles that you won't find anywhere else in the country.