Troitskyi Cathedral in Chernihiv belongs to the Troitsko-Illinskyi Monastery complex, founded on Boldyni Hills in the XIth century by St. Antoniy Pecherskyi. After the Mongol invasion the monastery was regenerated in 1649 at the initiative of the colonel S. Podobaylo. Ensemble of the Troitskyi Cathedral with the bell tower, Vvedenska Church and the refectory were built in 1679-1695 at the expense of hetman Ivan Mazepa. An amazing architecture in Ukrainian baroque style is a creation of talented Vilnius architect Johann Baptist Zauer (I. Baptist). Since 1790 Troitsko-Illinskyi Monastery serves as the residence of the Archbishop of Chernihiv – so-called “Bishop’s House” is located here. The monastery does not work, but the Catedral is opened to parishioners. Relics of Chernihiv saints: St. Feodosiy Cgernihivskyi, St. Lavrentiy, St. Filaret (Humilevskyi), part of the relics of Kyiv saints are in the Troitskyi Cathedral. Near to the southern wall of the cathedral the poet and fabulist L. Hlibov is buried. The monumental bell tower (58 m in height) is opened to visitors (195 steps), the best panorama of Chernihiv is opened on the top.