Ruined fort of Jahanpanah city "Bijay Mandal" built by Mohammad Bin Tughlaq in New Delhi. India.

Ruined fort of Jahanpanah city "Bijay Mandal" built by Mohammad Bin Tughlaq in New Delhi. India. Bijay Mandal is a remnant of Jahanpanah, one of the seven medieval cities forming Delhi—though seeing the neglected ruins as they stand now, you would be hard-pressed to believe this was once the seat of power of the Tughlaq dynasty. The ruined Bijay Mandal fort complex consists of a large structure believed to be the site of the “Thousand-Pillared Palace” of the Tughlaq Sultan Muhammad-bin-Tughlaq, who founded the walled city of Jahanpanah to protect from Mongol invasions. The fort is topped with an octagonal pavilion that overlooks a smaller unknown structure with an impressive dome.