ANDERNACH, a town in Rhenish Prussia, Germany, on the left bank of the Rhine, Iom. N.W. of Coblenz. Pop. 12,528. Antunnacum, the Roman frontier station, was founded by Drusus. In II09, Andernach received civic rights; in 1253 it joined the confederation of the Rhine cities, and was the most southern member of the Hanseatic league. In 1794, Andernach passed to France, but in 1815 was ceded, together with the left bank of the Rhine, to Prussia. It possesses old walls, a Roman esque parish church (12th century), a watch tower on the river and a Renaissance town hall. A famous crane, for lading mer chandise, dates from 1554. Mat-making is one of the chief in dustries, and millstones of the local lava and tufa are exported. This product was much used the Dutch in the construction of their dykes.