The Cathedral of St Demetrius (1194-97) is a royal church, built to the order of Grand Prince Vsevolod III. It is cubic in form, with three internal naves and a helmet dome. The cathedral is one-domed and four-pillared. Originally it was surrounded by galleries with towers that connected it to the prince's palace. They were demolished during the restoration in the 19th century.
The church is famous for its white-stone carvings - its walls are decorated with ca. 600 reliefs, depicting saints, mythical and real animals. Most of the reliefs are preserved in their original form, some have been replaced during the restoration of the 19th century. Out of the internal decoration a few fragments of frescoes of the 12th century have survived, particularly fragments of the Last Judgement composition. Currently, the cathedral is a part of the Vladimir-Suzdal open-air museum.
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.