THE UNUSUAL two-storeyed Khirkee (“Windows”) Mosque, built by Ferole ShahTughluq’s prime minister, Khan-i-fahan funan Shah, in the mid-14th century lends its name to this little village in South Delhi. The mosque has a fortress-like appearance, broken by rows of arched windows, which give the mosque its name. Its innovative design was not repeated again as its many pillared divisions were found impractical for large congregations. Further down is Satpula, the seven-arched stone weir built by Muhammad bin Tughluq in 1326. It formed part of a reservoir used for irrigation, and also made up a portion of the fortified wall enclosing Jahanpansh.