Explore the Vasai Fort, a colonial-era fort with beautiful Portuguese architecture. The fort is built along the coast and was used as a strategic base by the Portuguese. You can roam around the ancient walls and go through the intricate gates, making it great for children. They also have a museum containing some interesting artifacts.
Have a blast at the Tungareshwar Waterfall, a beautiful and refreshing waterfall nested in the hills. You can play in the shallow pools or absorb the scenic beauty. It is best to visit in the monsoon season to see the waterfall in its full glory, but be sure to check the timings.
At the Father Agnel Ashram, you can interact with the animals at the mini zoo, learn about the agricultural operations at the farm, and visit the religious sites. It is an educational place with a spiritual touch. If you're lucky, you might catch one of their periodic live music events.
End your vacation on a serene note by spending some time at Naigaon Beach. Take a swim, build a sandcastle, or just bask in the sun. There are several eateries nearby serving delicious local cuisine. You can watch the stunning sunset as a perfect end.
If you have more time, you can visit the Jain Temple, the Buddhist caves in Kanheri, or the Arnala Fort. If you have less time, you can skip the Father Agnel Ashram. It is recommended to hire a private taxi for sightseeing, but if you are on a budget, you can rent a car and drive yourself. Always carry sunscreen and a light jacket as the weather is unpredictable. In case of heavy rain, plan an indoor activity.