Halfway down the lower side of Karlovo Square (Karlovo náměstí) there is a house that was bought by the townsman Jan Ráb, who, as he renovated it, had its facade facing the square decorated with graffito figures.

The upper floors of the building are decorated with figures representing human virtues: faith, love, hope, justice, reason and fame. The lower floors of the building carry paintings with hunting motifs together with Vespasian and Titus, two Roman Emperors. In the mid-19th century, however, the graffito decoration was painted over and was not expertly restored until 1927. A real masterpiece is the portal of the house carved out of fine sandstone. Above the portal the following sentence in Old Czech was inscribed:

"POZIEHNEG HOSPODINE TOMUTO DOMU Y WSSECHNIEM W NIEM PRZEBYWAGYCZYM." (Translation: 'Lord, bless this house and everybody who lives in it.').