The House of Black Heads (Estonian Mustpeade maja) is a Renaissance-style building in Tallinn old town. The building's name is derived from its developers, the Brotherhood of Black Heads which was the guild of foreign unmarried merchants. The Brotherhood was founded sometime around 1399 and was active in Estonia and Latvia.
A 14th-century residential building probably occupied this site when the Black Heads bought up the property in the early 1500s. They immediately installed a new hall with an archless ceiling, but the serious rebuilding got underway in 1597 when the Dutch Renaissance façade, with its profusion of ornaments and carved decorations, was added. The eye-catching front door dates to 1640.
Inside you can see a two-naved, vaulted hall, which bought from the neighbouring St. Olav's Guild and dates to the 15th century. The site is frequently used for concerts and other gala occasions, and naturally any event held here will take on a timeless quality.
References: Tourism Tallinn
The Kalozha church of Saints Boris and Gleb is the oldest extant structure in Hrodna. It is the only surviving monument of ancient Black Ruthenian architecture, distinguished from other Orthodox churches by prolific use of polychrome faceted stones of blue, green or red tint which could be arranged to form crosses or other figures on the wall.
The church is a cross-domed building supported by six circular pillars. The outside is articulated with projecting pilasters, which have rounded corners, as does the building itself. The ante-nave contains the choir loft, accessed by a narrow gradatory in the western wall. Two other stairs were discovered in the walls of the side apses; their purpose is not clear. The floor is lined with ceramic tiles forming decorative patterns. The interior was lined with innumerable built-in pitchers, which usually serve in Eastern Orthodox churches as resonators but in this case were scored to produce decorative effects. For this reason, the central nave has never been painted.
The church was built before 1183 and survived intact, depicted in the 1840s by Michał Kulesza, until 1853, when the south wall collapsed, due to its perilous location on the high bank of the Neman. During restoration works, some fragments of 12th-century frescoes were discovered in the apses. Remains of four other churches in the same style, decorated with pitchers and coloured stones instead of frescoes, were discovered in Hrodna and Vaŭkavysk. They all date back to the turn of the 13th century, as do remains of the first stone palace in the Old Hrodna Castle.
In 2004, the church was included in the Tentative List of UNESCO"s World Heritage Sites.