The Great Guild was established in Riga in 1354, when merchants separated from the Holy Cross and the Trinity Guild. The members of the Great Guild were German merchants, goldsmiths and writers. The remains of the first building of the Great Guild at 6 Amatu Street, Riga, have been preserved in the basement of the current building. In 1330, a two-storey building was built with a two-door meeting room, the so-called Münster Room, which is included in the list of art monuments of national importance. The current building of the Great Guild was built in 1853-1857 according to the design of Peterburgs architect K.Beine. The building of the Great Guild was opened to the public in 1857 and has eclectic English Gothic forms and an outstanding interior. In 1965, the building was reconstructed after a fire in 1963, and a new lobby was added and the interior was adapted to the needs of the concert hall, thus creating Riga Philharmonic in the Latvian capital. The reconstruction was carried out according to the design of architect M.Gelzis. Buildings are an architectural monument of national importance. There are several art monuments of national importance in the building - a fireplace, interior decorations, stained glass. Reconstruction and restoration of the Great Guild Phase II aims to preserve, protect and develop cultural monuments of national importance located in the historical centre of Riga, which is included in the UNESCO World Heritage List. This refurbishment and renovation of the building will facilitate accessibility to these sites, as well as expand the innovative use of their sustainable resources to improve the quality of human life and strengthen the community of local residents. The implementation of the project will ensure that unique cultural monuments are preserved and further used in a beneficial and sustainable way, ensuring their accessibility and benefit to both local residents and visitors of the Great Guild. The total estimated cost of the project is EUR 10 086 039.00, of which: VAT. 40 months are planned for the implementation of the project, while 30 months are planned for the execution of the contract, i.e. by the end of 2026.