The Lower Bosphorus’ European Shore - Strolling Through Istanbul: The Classic Guide to the City - page 423

The külliye of Kılıç Ali Paşa is extensive, including a türbe, a
medrese and a hamam. The türbe is in the pretty graveyard behind
the mosque; it is a plain but elegant octagonal building with
alternately one and two windows in each façade, in two tiers. The
medrese, opposite the south-east corner of the mosque, is almost
square and like the mosque itself a little squat and shut in; it may well
not be by Sinan since it does not appear in the Tezkeret-ül Ebniye. It
is now used as a clinic. The hamam just in front of the medrese is
single; unfortunately it is no longer in use. The plan is unique among
the extant hamams of Sinan. The vast camekân doors lead into two
separate soğukluks lying not between the camekân and the hararet,
as is habitual, but on either side of the latter; each consists of three
domed rooms of diferent sizes. From that on the right a passage
leads of to the lavatories; the rooms on the opposite side were used
as semi-private bathing cubicles. The hararet itself, instead of having
the usual cruciform plan, is hexagonal with open bathing places in
four of its six arched recesses, the other two giving access from the
two soğukluks. The plan is an interesting variation on the standard,
and it has been pointed out that broadly similar plans may be found
in one or two of the older hamams at Bursa.
Across the street north of Kılıç Ali Paşa Camii is one of the most
famous of the baroque fountains, known as Tophane Çeşmesi. Built in
1732 by Mahmut I, it has marble walls completely covered with floral
designs and arabesques carved in low relief and originally painted and
gilded. Its charming domed and widely overhanging roof was lacking
for many years but has recently been restored. The fountain with the
mosque beside it and the busy and picturesque throngs around the
port used to be a favourite subject with etchers of the eighteenth and
nineteenth century.
On the west side of the wide street in front of Kılıç Ali Paşa Camii,
at the bottom of the hill coming down from Galatasaray, is a little
mosque recently rather well-restored. It is not very interesting except
it is ancient and well exemplifies the simple rectangular plan with
a hipped wooden roof. It was founded by the Chief Black Eunuch
Karabaş Mustafa who died, according to the Hadika, in 1530. Long a
ruin, it was rebuilt in 1962; the interior is without interest.