Raigad is a district in the Konkan division of Maharashtra, India. It was formerly known as Kolaba district. The district is named after Raigad Fort, a historic hill fortress that served as the capital of the Maratha Empire under Chhatrapati Shivaji Maharaj. Geographically, Raigad is characterized by its coastal plains, the Sahyadri mountain ranges, and numerous rivers like the Ulhas, Patalganga, and Savitri. The region boasts a rich historical and cultural heritage, with many forts, temples, and ancient caves. Economically, Raigad is a blend of agriculture, fishing, and industrial development, particularly in areas like Pen and Alibaug. It's also a popular tourist destination, attracting visitors with its beaches, historical sites, and natural beauty. The district is well-connected to Mumbai and Pune, making it an attractive location for both residents and businesses. Its proximity to major urban centers contributes to its growth and development, while still maintaining its unique Konkan charm. The district headquarters is Alibaug.