Gutenburg Castle is the ruin of a hill castle above the village of Gutenberg in the county of Bad Kreuznach. The castle is first recorded in 1213 as castro Weitersheim. In 1334 the counts of Sponheim (Lower County of Sponheim) sold the castle, which had meanwhile been renamed the Gutenburg. After the sale it underwent a major conversion. Following the extinction of the House of Sponheim (the Kreuzenach line died out in 1414 and the Starkenburg line in 1437) the castle went to the Lower Sponheim lords (mainly the Margraviate of Baden and Electoral Palatinate). The castle lost its importance over time, was destroyed during the Thirty Years' War and fell into ruins. Today the castle ruins are in private ownership.
The castle consisted of an inner ward completely surrounded by a ring-shaped outer ward, protected by curtain walls with mural towers as well as a neck ditch. Considerable sections of the wall remain visible today.
References:House of the Blackheads (Melngalvju nams) is a building situated in the old town of Riga. The original building was erected during the first third of the 14th century for the Brotherhood of Blackheads, a guild for unmarried German merchants in Riga. Major works were done in the years 1580 and 1886, adding most of the ornaments.
The structure was bombed to a ruin by the Germans June 28, 1941 and the remains demolished by the Soviets in 1948. The current reconstruction was erected from 1995 to 1999. Today the House of Blackheads serves as a museum and sometimes concert hall.