Cathedral Church of the Assumption of the Blessed Virgin Mary
This Neo-Romanesque style, Latin cruciform church was built in a period of time from 1893 to 1906 according to a design by the architect Karol Kozłowski. The project gained the approval of the partitioners after rumors had been spread that the church would be a thanksgiving votive offering for saving the Tsar's life at an assassination attempt. The three- aisled building with a transept is made of bricks. A mighty tower topped with a cupola, which is one of the characteristic symbols of the city, rises over the vestibule.

The church was consecrated by the bishop of Bielsko-Biała A. Łosiński. In 1935-1939 the church was decorated with stained-glass windows, made by the Żeleński Company from Cracow.

In the years 1904-1906 the walls were embellished with frescos depicting various scenes from the Polish history, made by Włodzimierz Tetmajer and Henryk Uziembło. Włodzimierz Tetmajer is the author of many polychromes, which ornament the following Polish monuments: the Wawel Cathedral, a church in Wieliczka, Kalisz or Kalwaria Zebrzydowska. The cathedral polychromes are entered by a separate decision to the register of moveable historic monuments of the Silesian Province. For many years the Sosnowiec City has been participating in financing the renovation of the paintings, which, thanks to this support from the city budget funds, are gradually regaining their former magnificence.

The Presbytery
The presbytery was built at the beginning of the 20th century. Just as in the case of the Cathedral, the presbytery was designed by the architect Karol Kozłowski. It is a detached building, located in the near proximity of the church.

Retaining wall with trading rooms
The wall is situated on the north-western side of the cathedral. The name of its designer and the exact date of its construction, remain unknown. The structure is made of stone and is divided in two parts by stairs leading to the main entrance of the church.

The retaining wall is at the same time a front elevation of the shopping facilities.