This old tenement building constitutes a classic example of Jarosław old tenement building. Tenements of this type were customized to commercial needs and modelled on Orient-typical houses called funduq. They are characterised by the shed (a kind of internal courtyard), lit by windows or skylights derived above the roof of their vertical extension. Cellars, the so-called merchant warehouses, often multi-storey, under all the buildings in the Old Town [in Polish ‘Stare Miasto’] were also useful for commercial purposes. They were hollowed in loess the layer of which below the surface of the market square is around 30 m. They were used for storing goods imported for the Jarosław fairs.
In Rydzikowa Tenement Building Prof. Feliks Zalewski Underground Tourist Route is located which is a string of walkways and chambers adapted to sightseeing. The route is 150 m long, and the lowest tier is located at about 9 m.
Currently inside Rydzikowa Tenement Building renovation is underway, designed to restore the splendour of the Grand Chamber [in Polish ‘Wielka Izba’] which is covered with a valuable larch ceiling.