In the morning, explore the lush green forests of Sanjay Gandhi National Park, which is home to many species of flora and fauna. Take a safari to see leopards, tigers and other wildlife in their natural habitat. In the afternoon, visit the 2,000-year-old Kanheri Caves, a complex of rock-cut Buddhist temples and monasteries. In the evening, take a leisurely walk along the peaceful Tulsi Lake.
Spend the morning exploring the Elephanta Caves, a UNESCO World Heritage Site located on an island in Mumbai Harbor. Take a ferry from Gateway of India to the island and see the intricate carvings and sculptures of Hindu and Buddhist gods in the rock temples. In the afternoon, take a walk in the lush greenery of the island and enjoy the scenic views of the harbor. In the evening, watch the sunset from the island before taking the ferry back to Mumbai.
Explore the Karnala Bird Sanctuary in the morning, which is home to over 220 species of birds, including the endangered Ashy Minivet and Malabar Trogon. Take a nature walk through the lush green forests and spot some of the rare birds. In the afternoon, visit the Karnala Fort, a 13th-century hill fort, which offers panoramic views of the surrounding forests and mountains. In the evening, visit the nearby Karnala Beach for some peace and quiet.
Other local attractions that you may visit include the Mumbai Zoo, the Elephanta Festival (if timed correctly), and the Bombay Natural History Society. A side trip to the nearby hill station of Matheran is also highly recommended. To maximize your fun, try local street food like vada pav, pav bhaji, and pani puri. Don't forget to take the local trains to experience the true essence of Mumbai.