Nonetheless, the main north–south street of Cairo, the Qasaba (al-Muizz Street), remained a fixture and the former area of Bayn al-Qasrayn remained a privileged site for the construction of royal architectural complexes such as the Maristan-Mausoleum-Madrasa complex of Sultan Qalawun. The Bayn al-Qasrayn square itself, however, steadily disappeared and became essentially another stretch of the Qasaba street, as construction on either side filled up the previously open space.[1]