Collegiate Church in tum – collegiate Church St. Mary and St Alexis, located in the Wielkopolskie Voivodeship. This is one of the best examples of Romanesque architecture in Poland.

The exact date of the beginning of construction of the Church is unknown, but it is expected that the work began in 1149 at the initiative of the Metropolitan of Gniezno Yannick.

Romanesque building of granite and Sandstone, in addition to religious functions and was a defensive fortress. In 1306 the Teutonic knights invaded tum and destroyed the Church, which remained abandoned for several decades. In 1487 the building was renovated, there were Gothic arched galleries and columns, ribbed vaults in the aisles. In 1569 was updated Central entrance – porch was added in the Renaissance style with a Roman portal. The interior appeared murals.

In 1705 during the attack of the Swedes Church was destroyed. In the years 1765-1785 on the initiative and at the expense of the Bishop of Saltyka Kaetana the Church was rebuilt in the classical style. The work was done under the guidance of architect Ephraim, Segera.

During the Second world war, the collegiate Church was partially destroyed: damaged the roof and interior. Restoration work began in 1947, during this period in the East was added a round tower. The crucifix was created by Jozef Goslavski. The opening ceremony of the restored Church took place in 1954.

In may 2011, the collegiate Church celebrated its 850th anniversary.