Purana Qila or Old Fort in Delhi is considered to be one of the oldest fort of India. The construction of the fort was started by Sher Shah Suri and his son Islam Shah completed it. Surveys tell that some painted grey ware were found during excavations which shows that the area was in used in 1000 BC. This tutorial will let you know about the history of the fort along with the structures present inside. You will also get the information about the best time to visit it along with how to reach the fort.