Delhi, the capital of India, is a city brimming with history. Everywhere you turn, there are remnants of bygone eras, empires risen and fallen. While the Red Fort rightly holds centre stage, Delhi boasts a treasure trove of other forts, each with its own unique story to tell. This year, visit Tughlaqabad, Siri Fort, Hauz Khas, Salimgarh and Adilabad forts