Covering an area of one kilometre the Vishal Fort in Vaishali is worth a visit, as it is a specimen of the world's oldest democracy and is named after King Vishal. Also merits a visit is a small but well presented Archeological Museum of Vaishali, which provides a glimpse into the ancient Buddhist world. Built during the time of Mohammedan Kings of India, the Fort of Munger encloses an area of about 2,22 acres and a circuit of 4-kms. Deep inside the lonely isolation of forests, within the district of Daltonganj, is situated the Palamu Fort. This fort is built in Islamic architecture and has witnessed the conquest of Daud Khan. Do not forget to visit the Rohtasgarh Fort at Sarasam, built by the Mughal emperor Sher Shah Suri. It is considered one of the largest and strongest hill forts in India.