A 350-year-old sea fort, Kolaba Fort near Alibaug, offers a unique experience accessible only during low tide. Visitors can walk or take a horse cart across the exposed seabed to explore this historic Maratha naval base. Commissioned by Shivaji Maharaj and strengthened by Kanhoji Angre, the fort boasts ancient temples and offers breathtaking sunset views, creating a mystical atmosphere before the sea reclaims its path.