Kabul remained in Mughal control for the next 200 years. Though Mughal power became centred within the Indian subcontinent, Kabul retained importance as a frontier city for the empire; Abul Fazl, Emperor Akbar's chronicler, described it as one of the two gates to Hindustan (the other being Kandahar). As part of administrative reforms under Akbar, the city was made capital of the eponymous Mughal province, Kabul Subah. Under Mughal governance, Kabul became a prosperous urban centre, endowed with bazaars such as the non-extant Char Chatta. For the first time in its history, Kabul served as a mint centre, producing gold and silver Mughal coins up to the reign of Alamgir II. It acted as a military base for Shah Jahan's campaigns in Balkh and Badakhshan. Kabul was also a recreational retreat for the Mughals, who hunted here and constructed several gardens. Most of the Mughals' architectural contributions to the city (such as gardens, fortifications, mosques) have not survived.