The Arsenal has given a certain colour to the whole suburb of Kassîm Pasha. It is chiefly inhabited by naval officers, who under Abd ül Hamid II outnumbered their men! There is a quarter of it called _Kalliounjou Koullouk_, which means the Guard-house of the Galleon Men. There are also a number of fountains in Kassîm Pasha carved with three ship lanterns to show who built them. And not the least famous of the Princes of the Sea lies there himself beside the mosque he raised out of the spoils of his piracies. This Pialeh Pasha was by birth a Croat and the son of a shoemaker. Captured as a boy by the Janissaries, he grew up to command the fleets of his captors, to conquer Chio and sixty-six other islands, and to marry the daughter of Sultan Selim II. But he failed to take Malta from the Knights of St. John, and it was the bitterness of his life. His mosque is almost unknown, so far does it lie in the back of Kassîm Pasha. They say that Pialeh dug a canal to its doors. They also say that he wanted to make it like a ship. The mosque, at all events, is different from all other mosques I know. The nave is shallower than it is wide, its six equal domes being held up by two central pillars like masts, while the single minaret rises out of the wall opposite the _mihrab_. The _mihrab_ itself, contained in no apse, is perhaps the finest tiled _mihrab_ I know. Some of the tiles have been stolen, however, and the mosque in general has a pillaged appearance. I thought from the bareness of the entrance wall that a large part of the magnificent frieze of blue and white tiles, an inscription by the famous Hassan Chelibi, must have been stolen too, until the _imam_ told me that the frieze originally stopped there, as no true believer may turn his back on any part of the Koran. The outside of the mosque is also unusual, with its deep porch, two-storied at either end. It is the largest mosque on the left bank of the Golden Horn, and even without its historical and architectural interest it would be worth a visit for the charm of its plane-shaded yard and the cypress grove behind the mosque where Pialeh lies in a neglected _türbeh_. [Illustration: The _mihrab_ of Pialeh Pasha]