The history of the Catholic cathedral in Saratov, consecrated in honor of St. Clement, is closely linked to the fate of German colonists who arrived in Russia after Catherine II's manifesto. These settlers, primarily Catholics and Lutherans, began to establish their lives in new conditions, creating settlements, one of which was the German settlement in Saratov. In 1805, the first Catholic church was built here, becoming the spiritual center for the community. It was a wooden building located on a street that later became known as German.

Since the mid-19th century, the Catholic community in Saratov underwent significant changes. In 1852, Pope Pius IX approved the creation of the Kherson Roman Catholic Diocese, with the city of Tiraspol designated as its residence. However, due to the lack of suitable infrastructure in Tiraspol, the first bishop Ferdinand Gelanus Kan chose Saratov as a temporary residence. Soon, Saratov became the actual center of the Tiraspol Diocese, covering vast territories, including Tavrida, Yekaterinoslav, Kherson provinces, and Transcaucasia.

From 1856, the wooden church in Saratov was bricked and transformed into a cathedral. However, despite its status, the cathedral remained one of the poorest in the Catholic world. In 1873, fundraising began for the construction of a new cathedral, the project of which was developed by architect M.N. Grudistov. The construction of the stone building in neo-Gothic and Romanesque styles under the guidance of architect K. Nevsky was completed in 1880. The new cathedral, consecrated in honor of St. Clement, became the architectural dominant of German Street.

The interiors of the cathedral amazed with their richness. The interior decoration was carried out by sculptor Bodrov and artist Kireev. The cathedral housed an organ made by the famous Warsaw master Potelsky. However, after the 1917 revolution, the church was seized from the Catholic community and underwent significant changes. In 1938, the building was reconstructed to house the cinema 'Pioneer,' and its architectural appearance was altered to meet the ideological demands of the time.

Despite numerous reconstructions and the loss of its original appearance, the building has retained its historical significance. In the late 20th century, attempts were made to restore its original look, but they were unsuccessful. Today, the former cathedral building serves as an exhibition and multimedia center, preserving within its walls the memory of the rich and complex history of the Catholic community in Saratov.