Purana Quila
Location: Near Delhi Zoo,
Mathura Road
Nearest Metro Station:
Pragati Maidan
Open: All days
Entry Fee: 
30 (Indians), 300
(foreigners)
Days Closed: None
Photography Charges: Free
(still camera); 25 (video
camera)
One does not have to go far to see the old fort or Purana Quila standing stoically amidst wild greenery.Built on the site of the most ancient of the numerous cities of Delhi, Indraprastha, Purana Quila is roughly rectangular in shape having a circuit of nearly two kilometers.
The thick ramparts crowned by merlons have three gateways provided with bastions on either side. It was surrounded by a wide moat, connected to river Yamuna, which used to flow on the east of the fort. The northern gate way, called the Talaqui darwaza or the forbidden gateway, combines the typically Islamic pointed arch with Hindu Chhatris and brackets; whereas the southern gateway called the
Humayun Darwaza also had a similar plan.
The massive gateway and walls of Purana Quila were built by Humayun and the foundation laid for the new capital, Dinpanah.
The work was carried forward by Sher Shah Suri,who displaced Humayun, Purana Quila is the venue for the spectacular sound and light show held every evening.