Up the Golden Horn to Eyüp - Strolling Through Istanbul: The Classic Guide to the City - page 379

The undulating façades of the türbe and the amusing turned back
staircase of the mektep are very charming.
One now returns to the inner street along which there are two or
three buildings that are worth at least a glance. One comes first to the
small mosque of Cezari Kasım Paşa, erected in 1515. It has a pretty
porch with four handsome antique columns of red granite, and the
balcony of the minaret is supported on an unusual zigzag corbel. A
little further down the street is the mosque of the Defterdar (Lord
High Treasurer) Mahmut Efendi; it is also ancient in foundation,
but wholly rebuilt in the eighteenth century and of little interest in
itself. In the garden is the founder's curious open türbe with a dome
supported on arches with scalloped soffits.
This completes our stroll to Eyüp, after which we walk back to
the iskele to take a ferry back along the Golden Horn to the Galata
Bridge.