The Haichenbach hilltop castle is located at an altitude of 450 meters above sea level on the ridge that forms the so-called Schlögener Schlinge on the Danube.
The first documented mention of Haichenbach dates back to 1160. At that time, Otto and Wernher de Eichenbach are mentioned as representatives of the ministerial noble family that derived its name from the castle. In 1273, the castle must have burned down for unknown reasons, as Rueger von Haichenbach documented in Schlägl in 1274 that he allowed the use of his forests in exchange for accommodation in the monastery hospital, during the time Haichenbach was being rebuilt.
After 1529 Haichenbach Castle was abandoned. Since 1984, restoration measures have been undertaken by the Working Committee for Homeland Care Hofkirchen; the castle ruins can now be safely visited.
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.