The Orthodox Church of Saint Nicholas (Biserica Ortodoxă Sfântul Nicolae) is a historic Romanian Orthodox church in central Bacău, built between 1848 and 1850. Also known as the Old Saint Nicholas Cathedral, it served as the city’s principal Orthodox church for more than 150 years, before the construction of the much larger Cathedral of the Lord’s Ascension began in the early 1990s.
The present church replaced an earlier stone building dating from the late 15th century, whose foundations and surrounding cemetery have been uncovered during archaeological excavations north of the current church. The medieval church underwent several repairs before being demolished in the mid-19th century to make way for a larger place of worship. Its replacement was financed through contributions from the people of Bacău, with the construction organized through the efforts of Pavalache Cristea and Archpriest Ioan Enache Petrovici. Bishop Veniamin Roset of Roman consecrated the new church in 1850.
As the principal Orthodox church in Bacău, the Saint Nicholas also became a setting for important public events. During the movement for the unification of Moldavia and Wallachia in 1859, Vasile Alecsandri is reported to have read a proclamation supporting the union from the church entrance. The building served as a religious gathering place for visiting merchants and worshippers from the surrounding region, while its clergy included the archpriests responsible for the Orthodox parishes of Bacău. In 1871, the Greek benefactor Panait Ianoli financed the construction of a separate chapel dedicated to Saints Menas, Panteleimon, and Charalambos, enlarging the religious complex.
The church combines traditional Orthodox architectural forms with elements of 19th-century design. Its substantial masonry walls, broad interior, and prominent towers give it the proportions of a small cathedral. Inside, the nave is separated from the sanctuary by a decorated iconostasis, while the walls and vaulted ceilings are covered with religious paintings. The interior frescoes were originally completed in 1897 and subsequently renewed by painter George Vasilescu.
A serious fire in 1976 damaged a large part of the church, requiring extensive restoration directed by Ioachim Mareș, who later became Bishop of Huși. Subsequent repairs and conservation work addressed the interior paintings and architectural fabric, including restoration campaigns during the 2000s.
