Clough Castle is an excellent example of an Anglo-Norman castle with an added stone tower. A small kidney-shaped bailey lies south of a large mound, originally separated from it by a 2.1m deep ditch. On top of the 25 ft high motte is a stone tower, enlarged to become a tower house in the 15th century. It is sited off-centre as much of the rest of the top of the motte was occupied by a large hall, which apparently burned down. Around the motte is a ditch, and on the south-east side a low crescent shaped bailey, which was probably once joined to the motte by a wooden bridge.
Excavations on the summit of the mound in 1950 revealed that originally (in the late 12th or early 13th century) the top of the motte was surrounded by a timber palisade within which were pits for archers. Also found was the foundation of a long rectangular hall in the north-east half of the area, probably built in the mid 13th century. Later in the same century a small rectangular stone keep was built to the south-west, two storeys high and surviving to this day, having been conserved in 1981-82. In the late Middle Ages, after what appears to have been a period of disuse, it was restored and added to, resulting in an L-shaped tower house.References:
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.