Alibag Fort, also known as Kolaba Fort, is a historic sea fort located in Alibag, Maharashtra, India. Built in the late 17th century by Chhatrapati Shivaji Maharaj, the fort was strategically positioned to protect the coastal area from enemy attacks. It features impressive walls and bastions, along with a moat that once surrounded it, making it a significant military structure of its time. The fort is accessible during low tide, allowing visitors to walk to it from the beach. Today, Alibag Fort is a popular tourist destination, offering stunning views of the Arabian Sea and a glimpse into Maharashtra's rich history.