St. John's Church was probably built in the first third of the 14th century as a three-nave basilica. The church was damaged in the Russian- Livonian War in the 16th century; lightning has set its spire on fire several times. Some parts of the church were destroyed in the Great Nordic War in 1708.
In the end of 19th century external walls of St. John's Church were cleaned of limewash, the original shape of the choir windows was restored and new external figures were made of instead of the destroyed ones. The building was reconstructed in the Neo-classicism style in 1930’s. During World War II, the church caught fire. The damage was so extensive that an unknown and rich interior decoration was discovered the beneath the destroyed plaster sheet. There have been over a thousand sculptures in the internal and external walls of the construction. There is no other brick church decorated with so much terracotta plastic in Europe.
There are fifteen figures in the triple arch niches of the fronton which represent Judgement Day. On the facade and two sides of the tower there are other figures since the tower's frieze consisting of quaternion foils with a human head continuing in each quaternor foil on the sides of the longitudinal building as well. There are friezes and niches decorated with sculptures in the interior as well.
However, the western wall, with numerous niches with sculptures and pseudotriforium located above the arcades in the niches of which there are figures sitting on a throne, deserves special attention. In the eastern wall, above the triumphal arch, there is a large terracotta group: Christ on a cross and Mary and John beneath the cross.
Reference: Tartu Tourist Information
The Erfurt Synagogue was built c. 1094. It is thought to be the oldest synagogue building still standing in Europe. Thanks to the extensive preservation of the original structure, it has a special place in the history of art and architecture and is among the most impressive and highly rated architectural monuments in Erfurt and Thuringia. The synagogue was constructed during the Middle Ages on the via regia, one of the major European trade routes, at the heart of the historical old quarter very close to the Merchants Bridge and the town hall. Many parts of the structure still remain today, including all four thick outer walls, the Romanesque gemel window, the Gothic rose window and the entrance to the synagogue room.
After extensive restoration, the building was reopened in 2009. On display in the exhibition rooms is an collection of medieval treasures discovered during archaeological excavations. This includes 3,140 silver coins, 14 silver ingots, approx. 6,000 works of goldsmithery from the 13th and 14th centuries and an intricately worked wedding ring of the period, of which only two others are known to exist anywhere in the world. A mikveh (Jewish bath) has been excavated close by (13th/14th century). The Old Synagogue, the Small Synagogue and two Jewish cemeteries together form a network of historical buildings and sites which vividly portray the role of Jewish life in the history of Erfurt.