SEVEN CITIES OF DELHI

The city of Delhi is the site where seven cities were built in the past. In fact, more mythological cities are believed to be there in the geographical location, like the city of Hastinapur and Indraprastha.
The modern city contains the remnants of seven successive ancient cities which are as follows:
# Qila Rai Pithora built by Prithvi Raj Chauhan, near the oldest Rajput settlement in Lal-Kot;
# Siri, built by Alauddin Khilji in 1303;
# Tughluqabad, built by Ghiyasuddin Tughluq (1321-1325);
# Jahanpanah, built by Muhammad bin Tughluq (1325-1351);
# Kotla Firoz Shah, built by Firuz Shah Tughluq (1351-1388);
# Purana Qila, built by Sher Shah Suri and Dinpanah built by Humayun, both in the area near the speculated site of the legendary Indraprastha (1538-1545); and
# Shahjahanabad, built by Shah Jahan from 1638 to 1649, containing the Lal Qila and the Chandni Chowk.