It was King Ajatasatru who built a fort at Pataliputra though the city was founded by his son (or grandson) Udayana. "Modern researches have shown that this ancient metropolitan city of Pataliputra was situated on a long strip of land, half a mile to the north of the village Kumarhar. Asoka's palace extended from the mound called Chhoti Pahari to Kumarhar and it covered an area of 4 sq miles. Bhikra Pahari, an artificial hill of brick debris over 40 feet high and about a mile in circuit on which stood the residence of one of the Nawabs of Patna, is identified as the hermitage-hill built by Asoka for his brother Mahendra. In the Panchpahari are identified five great relic-stupas built by Asoka". ('Pataliputra- by J.H. Dave, Bharan' s Journal. 26 August 196).
It was Sher Shah, India's last great Afghan Emperor, who changed the city’s name to Patna. Patna is now the capital of Bihar State.
The Patna city is connected by daily air service with Kolkata and Kathmandu, Varanasi and Delhi, and by train with all major cities. Patna's population is 9,16,100.