Nikolai Chagin

Nikolay Mikhailovich Chagin (Николай Михайлович Чагин; 1823, Oryol – 1909) was a Russian architect active primarily in Vilnius and the Crimea. He took part in the Siege of Sevastopol and served as Vilno's main architect for 38 years. Chagin mastered the Byzantine Revival and several other revivalist styles, often blending them at will. His church buildings include:
Nativity Cathedral, Riga
Cathedral of the Theotokos, Vilnius
St. Paraskeva Church, Vilnius
St. Euphrosyne Church, Vilnius
St. Catherine Church, Vilnius
Bell tower of St. Anne's Church, Vilnius
Jelgava Orthodox Cathedral
St. Mary's Church, Grodno
Church of the Resurrection, Foros
The interiors of the Chersonesus Cathedral