The Cathedral of Ratzeburg, one of the oldest brick churches of Northern Germany, is a basilica with three naves. Its arches are supported by pillars and it is built in the form of a cross with a choir quadrangle and a halfround apse. The last restoration (completed in 1966) returned the cathedral to its late Romanesque conception, so you can discover most of the unity and integrity of its original design.
The cathedral was founded in 1154, when Henry the Lion, Duke of Saxony, and Hartwich I, Archbishop of Hamburg, refounded the episcopal seat of Ratzeburg, and Evermodus became its first bishop. The cathedral was restored, and additions were made to it in the 15th century.
The Cloister, on the north side of the Cathedral, was begun shortly after the completion of the Cathedral (ca. 1220). The cloistered courtyard is open for the public.
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.