The Gateway of India is a national landmark that overlooks the Arabian Sea. Take a quick boat ride from here to see the Elephanta Caves, a UNESCO Heritage Site. These caves originated around 5th to 6th century AD, and have gorgeous carvings and sculptures of Hindu gods and goddesses.
Formerly known as The Prince of Wales Museum, the Chhatrapati Shivaji Maharaj Vastu Sangrahalaya is a perfect example of Indo-Saracenic architecture. The collection spans from Indus Valley Civilization to present-day art. The museum has more than 60,000 artifacts, which includes rare coins, weapons, sculptures, and more.
If you are craving nature, then this is the perfect trip for you. Sanjay Gandhi National Park is home to many endangered species like leopards, four-horned antelope, and barking deer. You can also opt for a morning trek to Kanheri Caves, where you can explore the ancient Buddhist caves (2000 years old) and the beautiful waterfall.
If you have an extra day, you can visit the Chor Bazaar, which is a popular flea market to buy antiques and vintage items. For foodies, Mumbai has many street food stalls where you can try the famous vada pav (spicy potato fritter in a bun) or pav bhaji (a spicy curry made with mixed vegetables served with a bread roll). If you have less time, you can skip the Elephanta Caves boat ride and just explore the Gateway of India area.