Ostrów Tumski, Wrocław

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Islands in Wrocław, with the former Cathedral Island on the right

Wrocław Cathedral

Tumski Bridge

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Church of St. Giles, built 1241-42

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Archbishop′s palace

Ostrów Tumski ("Cathedral Island", German: Dominsel) is the oldest part of the city of Wrocław in south-western Poland. It was formerly an island (ostrów in old Polish) between branches of the Oder River.

Archaeological excavations have shown that the western part of Ostrów Tumski, between the Church of St. Martin and the Holy Cross, was the first to be inhabited. The first, wooden church (St. Martin), dating from the 9th century, was surrounded by defensive walls built on the banks of the river. The island had approximately 1,500 inhabitants at that time.

The first constructions on Ostrów Tumski were built in the 10th century by the Piast dynasty, and were made from wood. The first building from solid material was St. Martin's chapel, built probably at the beginning of the eleventh century by Benedictine monks. Not long after the first cathedral was raised, in place of the small church.

In 1163 the settlement was raided by Boleslaw I the Tall who had returned after being banished. After taking control of the area and waiting for the political situation in Silesia to stabilize, he chose Ostrów Tumski as his new seat. He began replacing the wooden defenses with brick ones and to build a Roman-style residence.

In 1315 Ostrów Tumski was sold to the church authorities. Since the island ceased to be under secular jurisdiction, it was often used by those who had broken the law in Wrocław, as a place of sanctuary. An interesting indication of the special status of the island was a ban on wearing anything on the head by men, effective even on Tumski Bridge beyond the border pole of this small "ecclesiastical nation" (the law also applied to royalty).