Argyro-Kastro, a town of Turkey, in Albania, on the river Deropuli, an affluent of the Voyutza, 46 m. N. W. of Janina; pop. about 7,000. It is built on the side of a mountain, and the streets are so steep that persons on horseback are obliged to dismount. The streets are separated by ravines, planted with gardens. There is a strong castle, which was enlarged by Ali Pasha, and has accommodations for 5,000 men.