Château de Sauveterre was constructed at the end of the 13th century by Edward I of England on one of the principal routes between Périgord and Agenais. During the Hundred Years' War, it became a centrepiece in the Anglo-French war of attrition. It was burned in 1789 during the French Revolution.
It was bought by the aviator Jean Mermoz in 1936, less than a year before his death. He had seen the castle from the air. After his death, the castle was abandoned and became the property of the commune until it was sold in the 1980s.
The castle in its entirety, as well as its grounds and moat, have been classified as historical monuments since 19 September 2003. It is privately owned.
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.