Bihar is one of the largest states of India and it is also one of the oldest continuously inhabited states in the world with written history dating back to 490 BCE when it was founded by King of Magadh Empire, Ajatashatru. Pataliputra was its capital and it was known in ancient time was power centre of India as it was capital of various empires that grew in Norther India starting with Magadh, Haryanka, Nanda, Mauryan, Shunga, Gupta and Pala. It was also center of learning and art. Bihar is also considered as a holy state as it is important to all Dharmic faiths including Buddhist, Hindu, Jain and Sikh. Bihar has always been a major trade and agricultural hub, and is known for active exports are grain, sugarcane, sesame, and medium-grained Patna rice. Bihar is also a very popular tourist destination as it has assimilated thousands of years of history. Some of the famous place to visit in Bihar are Kumhrar and Agam Kuan, which belong to the Ashokan Period, Takht Sri Patna Sahib is one of the Five Takhts of Sikhism and is birthplace of 10th Guru of the Sikhs, Guru Gobind Singh, Gaya, Sonepur, Smriti Park, Patna Planetarium etc.