Rheingrafenstein Castle lies on a 136-metre-high porphyry rock formation on the river Nahe, opposite Bad Münster am Stein-Ebernburg. The rock castle was probably built in the 11th or 12th century by the Counts of Nahegau of the Emichones family. It was definitely the ancestral castle of the Lords of Stein, the later Wild- and Rhinegraves, and it remained in their possession until the French Revolution. The Lords of Stein were first mentioned in the 12th century. Their relationship to the Counts of Nahegau is unclear. Rheingrafenstein Castle itself is first unambiguously mentioned in the 13th century. The Lords of Stein acquired the Rheingau in the second half of the 12th century through marriage. In 1196, Lord Wolfram of Stein began styling himself Rhinegrave. This title was later attached to his castle.
During the Thirty Years' War, the castle was captured by French and Spanish troops. In 1688, it was destroyed by general Mélac. In 1721, a salt works was built on top of the castle's ruins. The castle's last owner, the Prince of Grumbach, moved his residence to nearby Gaugrehweiler.
Parts of the enceinte, a vaulted cellar, a few steps of the former tower house, and the foundations of the former tower staircase are still standing. Another staircase leads through the rocks to a viewing platform.
On the southern slope of the rock, the ruins of the bailey Affenstein can be seen.
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.