The former municipal brewery originally occupied a complex of five houses and thus formed the western end of the block, which is called the Big Spall. The brewery, the torso of which can be found in house No. 20 on Starobrněnská Street, was originally accessible from Dominikánská Street and was accessed by a courtyard gate from what is now Šilingrova Square.

When the brewery was rebuilt in 1775, three more houses were gradually added to the brewery premises on Starobrněnská Street, where the town beer hall was also established. The upper floors of the building housed the brewery's employees and the brewmaster František Ondřej Poupě, the author of the first textbook on the education of Czech brewers and brewing, also lived there.

The city brewery at the Brno Gate was the largest in Brno in the 16th century and contributed a great deal to the city treasury. The size and extent of its cellars on several floors corresponded to this. Directly below the house No. 20 is a square, early Renaissance cellar with four cross vaults, arched on a central pillar of sandstone.

From the square cellar, other spaces are accessible by stairs, facing the street below. The staircase leads to a long corridor with entrances to the cellars of the opposite street. These entrances are now walled up and the corridor leads to the largest cellar space under Šilingr Square.

This Baroque cellar, 24 m long and 5.5 m wide, with a brick vault almost 4 m high, was in the past connected to a total of four houses surrounding the square. Apart from the wartime situation, this cellar probably served the needs of the town brewery. However, during construction work, part of the space under the square was damaged when a cement silo broke through the original vault and collapsed to a depth of ten metres.