The tomb of 'Umar Agha is a small structure with a plain plastered-brick dome, and sits opposite the mosque of Aqsunqur. The sabil has two original bronze grilles, an inscription on its northern facade, and a domestic qa'a over the sabil instead of the more common kuttab. The structure was partially remodeled in the nineteenth century, and seems to at one time have occupied the whole corner block.
Warner, Nicholas. The monuments of historic Cairo: a map and descriptive catalogue, 133. Cairo: American University in Cairo Press, 2005.
Williams, Caroline. Islamic monuments in Cairo : the practical guide, 87. Cairo: American University in Cairo Press, 2008.