Purana Qila's translation of "Old Fort" is simple and fitting, considering it is one of the oldest forts in Delhi. The 16th century stone structure is not on the popular tourist circuit, making it a prime spot to indulge in the historical markings of the city's urban developments. Excavations show the fort was inhabited as early as 300 BC, around the time when Delhi was founded. Purana Qila was also the site of several temporary settlements, including over 3,000 Japanese civilians during the second world war. From November - January, history comes alive at the nightly sound and light show. Pack a picnic and come early for the best seats.