Kokemäki Castle (Kokemäen linna) was a medieval castle in Kokemäki town. The time of its foundation is unclear, but the castle was most likely completed in 1324-1325. It was demolished in 1367 by order of King Albert, as the local residents complained of heavy taxation for the upkeep of the castle. The castle was located on the Linnaluoto Island in the river Kokemäenjoki.
Kokemäki Castle was the administrative centre of Kokemäenkartano slottslän. Its function was similar to that of the castles of Turku, Häme and Vyborg, which are still preserved today. The only known reference to Kokemäki Castle is King Albert's warrant for the demolition and relocation of the castle, dated 12 July 1367. It was probably built of limestone and equipped with a round tower. In 1364–1365 Kokemäki Castle was besieged by the army of King Albert as the castle was under the rule of Magnus IV of Sweden.
Archaeological excavations were made in 1885. Various items were found which were dated to the late Bronze Age, as well as to the 13th and 14th century. After the demolition of Kokemäki Castle a new castle, Aborch, was established. Location of this castle is uncertain, since it was disbanded in the 1410s. It was probably built 1.5 kilometres upstream at the same location as the later Kokemäenkartano manor.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.