CANSTADT, or KANSTATT, a town of Wurtemburg on the Neckar, not far from Stuttgart, at a point where the high roads of the circle converge. Besides the mineral springs for which it is famous, it possesses a fine cathedral, a beautiful town-hall, an educational institute, considerable manufactures of cottons, woollens, and tobacco, and an important transit trade. The adjoining country is remarkably picturesque and fertile. Seelberg, a hill in the vicinity, is upwards of 600 feet in height, and is interesting as well for the numerous mineral springs which issue from it, as for the valuable fossils with which it abounds. The summer theatre, and the pleasure house, are much frequented by the people of Stuttgart, who repair thither in great numbers during the vacation. In the neighborhood is the princely seat of Rosenstein, formerly known under the name of Kahlenstein. Pop. 5,400.