Perhaps the success of the pioneering project on Leszno Street inspired the initiators of another building relocation in the capital. From 30 March to 18 May 1970, the Lubomirski Palace, weighing 8,000 tonnes and measuring 65 metres in length and 16 metres in width, was rotated 74 degrees. The 18th-century residence originally belonged to the Radziwiłł family. In 1790, the new owner, Aleksander Lubomirski, rebuilt the edifice in a classicist style, similar to the one it retains today. In the 19th and early 20th centuries, the palace changed hands, was even converted into a tenement house, and eventually fell into disrepair due to a lack of renovation. In 1938, it became the property of the Warsaw authorities, but the outbreak of World War II thwarted plans for its renovation. The building was damaged during the war and subsequently rebuilt.
However, it fitted less and less into the changing urban landscape around it. In 1970, the decision was made to relocate the palace so that its majestic colonnaded façade would close off the axis of the Saxon Garden (Ogród Saski), thereby creating a frontage for the square that had emerged between the enormous blocks of flats in the Za Żelazną Bramą (Behind the Iron Gate) housing estate. Here, too, steel rails were used; it was on these rails that the palace, severed from its foundations, was moved to its final site. According to some accounts, the originator of the change in the building’s location was Marian Spychalski, an architect and co-founder of the Bureau for the Organisation of the Rebuilding of Warsaw, as well as the first post-war mayor of Warsaw.