Kolaba Fort is a historic sea fort located in Maharashtra, India, near the coastal town of Alibaug. Built in the 17th century by Chhatrapati Shivaji Maharaj, it served as a strategic military base to protect the coastline from enemy attacks. The fort is surrounded by water during high tide, making it accessible only during low tide. The fort features impressive stone walls, bastions, and several structures, including temples and a palace. Visitors can explore its rich history and enjoy panoramic views of the Arabian Sea. Today, Kolaba Fort is a popular tourist destination, attracting history enthusiasts and nature lovers alike.