Bikaner, the royal fortified city, is surrounded by a long wall with five gates. The magnificent forts and palaces made of reddish-pink sandstone bear testimony to the city's rich cultural heritage. The most famous of these forts is the Junagarh Fort. It was built by Raja Rai Singh, the sixth ruler of Bikaner who reigned from 1571 to 1612. During his imperial service he traveled extensively, giving him an appreciation of art and architecture. These ideas have been incorporated into the architectural style of Junagarh Fort. Situated at a height of more than seven hundred feet above sea level, it towers over the city and can be seen from a distance. The fort and its palaces are profusely decorated with magnificent stone carvings. The major buildings within the fort include the Anup Mahal, Diwan-e-Khas, Hawa Mahal, Badal Mahal, Chandra Mahal, Phool Mahal, Rang Mahal, Dungar Mahal, and Ganga Mahal. The Chandra Mahal has remarkable frescoes. Beautiful mirror work adorns the walls of Phool Mahal while golden pen work decorates the Anup Mahal.