Montaigle Castle was built in the 14th century, and destroyed by Henry II of France in 1554. It stands on a rocky spur overlooking the valleys of the Molignée and of the Flavion. The site was used during the Late Roman period for a Belgo-Roman fortification.
The ruins are open to visitors, convention spaces are also available.
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.