The aim of the project is to develop the underground building at Market Square 1 and the underground and the premises of the Museum of the History of Przemyśl at Market Square 9 and Serbian 7, and to combine them with an underground link to give them a new educational, tourist, economic function and to create the Underground Tourist Route in Przemyśl, together with the reconstruction of the north-eastern part of the Old Town Square – a historic area of public space to satisfy the needs of locals in the area of meeting and integration events. The project provides for the execution of necessary construction and installation works, construction for multimedia installations and scenography, assembling multimedia devices with applications showing the medieval multicultural history of the castle on San.As a result of the project, the revitalisation area will be covered by the area of 0.52 ha, In the areas covered by integrated urban development strategies there are 16 982,00 people. The project envisages repaired in urban areas 1676.20 m² of usable public buildings (3 historic buildings – Market 1, Market 9, Serbian 7 and historic underground manifold facility), reconstruction of 3300 m² of north-eastern part of the historic Old Town Square. The work will also improve the energy efficiency of the 1 building (Serbian 7) the energy efficiency of the building[pieces]. The project also envisages the creation of 29.80 m² of space enabling economic activity. As a result of the implementation, employment is also expected to increase by 5 people. The buildings/objects covered by the project in 2022 will be used by 24,000 people. The project’s applicant is the Municipality of Przemyśl, while the partner is the National Museum of Przemyska Land in Przemyśl.