Shahjahanabad built by Shah Jahan consisted of a fort-palace complex and the city adjoining it. To the west of Red Fort lay the Walled City with 14 gates.

It was a well planned city with canals that brought fresh drinking water to all homes. The city also had excellent drainage system. Wells also provided water to the households.

Chandni Chowk was the major street in the walled city. It runs through the middle of the walled city. A canal ran through the middle of the street as part of the water supply scheme. Chandni Chowk was broad enough for royal processions to pass by.

Jama Masjid in Shahjahanabad was one of the largest and grandest mosques in India.

During Shah Jahan’s time the city was an important centre of Sufi culture. It had several dargahs, khanqahs and idgahs. Open squares, winding lanes, quiet cul-de-sacs and water channels made it an opulent and beautiful city.