The Gateway of India is an iconic arch monument built in the 20th century. Take a ferry from here to Elephanta Caves. The ride offers you excellent views of the city's skyline and Mumbi Harbor.
The Elephanta Caves are full of ancient carvings and sculptures that offer a glimpse of Hindu mythology. After returning from Elephanta Caves, visit the Sanjay Gandhi National Park to explore several hiking trails, a lion safari, and recreational activities.
The Kanheri Caves are home to more than 100 rock-cut Buddhist shrines, dating back to the 10th century. Next, visit Haji Ali Dargah, built-in 1431, a religious pilgrimage spot and mosque.
Siddhivinayak Temple, a popular Hindu temple, is dedicated to Lord Ganesha. Next, visit Nehru Planetarium, which offers a variety of shows, including documentaries on space exploration, the history of astronomy and much more.
Marine Drive, also known as the Queen's Necklace, offers beautiful views of the Arabian Sea. Next, visit the Chhatrapati Shivaji Terminus (CST), a UNESCO World Heritage Site and Victorian-Gothic-style train station.
If you have less than 5 days, skip visiting the Sanjay Gandhi National Park. If you have more time, add a visit to the Dr. Bhau Daji Lad Mumbai City Museum, located near the Byculla Zoo or go for a street food tour at Mohammad Ali Road.