The church and monastery of the Augustinian hermits in Erfurt was built around 1300. Martin Luther, the famous Augustinian monk, was admitted to the monastery on 17 July 1505. The Augustinian Monastery pays tribute to Martin Luther with a new exhibition. The Lutherzelle (Luther's cell) can be visited as part of the exhibition. Since 1988 the monastery has been used as an ecumenical conference centre and a memorial to Luther.
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.