The traces of the town's history are not only destroyed by ill-advised building interventions and the construction of new above-ground buildings. It also happens when constructions necessary for the functioning of the city and ensuring the comfort of its inhabitants are implemented. The construction of underground aquifers is one of these structures. These structures, which hide in their bowels the utility networks and distribution of various utilities, drinking water distribution and sewage lines, are built under the streets, squares and parks of the historic core of the city. It can therefore be assumed that from time to time they will come into conflict with the historic underground, which is at the same depth as the collector lines.

One of the many examples of accidental discoveries during the excavation of collectors was recorded in 2006 during the implementation of the collector network under Svobody Square. A complex of Baroque cellars was found directly under building No. 10, known as the house "U Čtyř mamlasů". The partially buried cellars with access staircases were in very good structural condition and could probably have been saved if discovered in time. However, as the line of the collectors could no longer be altered, the discovered cellars were only documented and then destroyed.

When connecting the utilities of the houses in Radnická Street to the collector system, the presence of historical cellars complicated the situation. Therefore, in this case, the solution was chosen - to use the cellars as part of the collector. The new utility lines now pass through the medieval walls - under the vaults where wine used to ripen and merchants used to store their goods before the annual Brno markets. This is a symbolic link between the historical underground and the modern buildings, which are likely to surpass history in their scale and leave an indelible record of the lifestyle of the Brno people in the twenty-first century for future generations.