The Abbey of Sant'Albino is a church-monastery complex, founded in the 5th century in Mortara. In 774 the abbot Alkwin Albin added a canonical college to the church, which had become a stopping place for pilgrims traveling south to Rome.
The church of Sant'Eusebio had putatively been founded by Charlemagne to bury the soldiers of his army who died locally in a battle on October 12, 773. Among the casualties there were also two paladins of Charlemagne's, Amelius of Alvernia and Amicus from Beyre.
The church has been refurbished over the centuries, and the architecture is eclectic, mingling the original Romanesque style, clearly recognizable in the hemicircular apse, with the Renaissance style, to be found in the facade and in the nave.
Against the southern side of the portico of the facade, is a building, perhaps a part of the ancient monastery. Beside the church, there are the ruins of the cloister, a brick open gallery with wooden architraves and with a 14th-century Gothic window decorated with rural motives. In the interior, on the right wall, are three frescoes (1410) painted by Giovanni da Milano depicting St Anthony Abbott, the Baptism of Jesus, and an Enthroned Virgin with Donor and Saints Albin, Jacob, and Augustine. Another fresco, by an unknown 15th-century painter depicts St Laurentius with the symbol of his martyrdom in his hand. Next to this fresco are graffiti carved in the bricks by the pilgrims over the ages: the most ancient is from the year 1100. Another anonymous fresco is on the left part of the presbytery and represents Virgin with Child and Saints.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.