St. Mary's Church (Bazylika Mariacka) is the largest brick church in the world. According to tradition, as early as 1243 a wooden Church of the Assumption existed at this site, built by Prince Swantopolk II. The foundation stone for the new brick church was placed on on 25 March 1343. At first a six-span bay basilica with a low turret was built, erected from 1343 to 1360. Parts of the pillars and lower levels of the turret have been preserved from this building.
In 1379 the masonry master Heinrich Ungeradin led his team to start construction of the present church. St. Mary's Church in Lübeck, the mother of all Brick Gothic churches dedicated to St. Mary in Hanseatic cities around the Baltic, is believed to be the archetype of the building. By 1447 the eastern part of the church was finished, and the tower was raised by two floors in the years 1452-1466. Since 1485 the work was continued by Hans Brandt, who supervised the erection of the main nave core. The structure was finally finished after 1496 under Heinrich Haetzl, who supervised the construction of the vaulting.
After the Reformation in 1529 the first Lutheran worship was held in St. Mary's. After 1557 King Sigismund II Augustus had granted Danzig the religion privilege allowing to celebrate the communion under both kinds the city council ended Catholic masses in all other parish churches in the city and those in its countryside territory, except of in St. Mary's. Here Catholic Masses at the high altar were continued until the city council stopped them in 1572.
In the course of the Partitions of Poland the city lost its liberty in 1793 and The Prussian government integrated St. Mary's and all the Lutheran state church into the all-Prussian Lutheran church administration.
Between 1920 and 1940 St. Mary's became the principal church within the Protestant Regional Synodal Federation of the Free City of Danzig. Starting in 1942 more or less movable major items of Danzig's cultural heritage have been dismantled and demounted in coordination with the cultural heritage curator. So also the presbytery of St. Mary's church agreed to remove items like archive files and artworks such as altars, paintings, epitaphs, mobile furnishings to places outside the city.
The church was severely damaged in World War II, during the storming of Danzig city by the Red Army in March 1945. After the basic reconstruction was finished, the church was reconsecrated in 1955. The reconstruction and renovation of the interior is an ongoing effort and continues to this day.
St. Mary's Church is a triple-aisled hall church with a triple-aisled transept. Both the transept and the main nave are of similar width and height, which is a good example of late Gothic style. Certain irregularities in the form of the northern arm of the transept are remnants of the previous church situated on the very same spot. The vaulting is a true piece of art, and was in great part restored after the war. The exterior is dominated by plain brick plains and high and narrow Gothic arch windows.
The interior of St. Mary's church is decorated within with several masterpieces of Gothic, Renaissance and Baroque painting. The most notable, The Last Judgement by Flemish painter Hans Memling, is currently preserved in the National Museum of Gdańsk. Other works of art were transferred to the National Museum in Warsaw in 1945. It wasn't until 1990s when several of them were returned to the church.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.