The Monastery of Saint Euthymius (Spaso-Yevfimyevsky) is the most imposing monument in Suzdal — a fortified complex of white stone walls, towers, and churches that dominates the northern side of the town above a bend in the Kamenka river. Founded in the 14th century as a defensive monastery, it was expanded over several centuries into the large walled complex that survives today.
Inside, the Transfiguration Cathedral is the principal church, its interior frescoed by Gury Nikitin and Sila Savin in the 1680s — among the finest 17th-century fresco cycles in Russia. The monastery also houses exhibits on local history and a small prison church used under both the tsars and the Soviets for political and religious detainees. The bell tower stages carillon performances several times a day: the 17 bells play for about ten minutes, and the sound carries across the whole town. It is worth timing your visit to catch one.