Początki Kościoła w Łęczycy. Badania opactwa i kolegiaty w Tumie pod Łęczycą

The paper summarises excavations and conservation works at the 12th-century collegiate church of St. Mary and St. Alexius in Tum near Łęczyca and the foundation walls relics uncovered under the church which are identified with St. Mary’s abbey, mentioned in the Gniezno bulla from 1136. The presumably Benedictine abbey could have been built around the year 1000 and was pulled down before erection of the collegiate church, which started around 1141. After several destructions and reconstructions that took place during the 850 years of existence, the church has recently undergone conservation procedures to allow its further functioning.