The Royal House was built for Konstantin Korniakt, a merchant of Greek origin who settled in Lviv. In 1571 he bought two Gothic tenement houses on the Market Square, together with an adjoining area on the side of today's Ivan Fedorov Street (formerly Blacharska Street). On this site, partly using the existing tenements, a building designed by the architect Peter Barbon was built in 1580.

The most splendid period in the building's history falls in the years when it was in the possession of King John III Sobieski. It was then that the tenement gained the nickname "royal" and was rebuilt to suit the purposes of the monarch's residence. After the incorporation of one more tenement (at number 7), a tenement with a richly decorated façade with 6 windows was created, crowned with a magnificent attic. Flats were also arranged for the King on the first floor of the building, the decoration of which has been preserved to this day.

The museum function was given to the building in the early 20th century. The 225th anniversary of the victory at Vienna was celebrated on 12 September 1908 with the opening of the newly established Jan III. National Museum. In 1940 its collections were taken over by the Lviv Historical Museum, which is still active today.

In 2020. POLONIKA Institute financed the renovation of the historic hallway adjacent to the representative room on the first floor of the Royal Tenement House. As part of the work, secondary cement mortar was removed, the historic plaster was protected and the interior of the hallway was integrated in colour. The work was carried out at the same time as the conservation of the Renaissance frescoes in the representative hall, financed from the programme of the Ministry of Culture and National Heritage.

Executor: Artem Renovo Paweł Boliński

Conservation work carried out in 2020, Conservation Programme, Polonica Institute