The Old Market Square ("Alter Markt") is Potsdam's historical city centre. For three centuries this was the site of the City Palace ("Stadtschloß"), a royal palace built in 1662. Under Frederick the Great, the palace became the winter residence of the Prussian kings. The palace was severely damaged by Allied bombing in 1945 and demolished in 1961 by the Communist authorities. In 2002 the Fortuna Gate ("Fortunaportal") was rebuilt in its original historic position which was followed by a complete reconstruction of the palace as the Brandenburg Landtag building inaugurated in 2014. Nearby the square in the Humboldtstraße block, which also was demolished after getting damaged in 1945, reconstructions of several representative residential palaces including Palazzo Pompei and Palazzo Barberini housing an arts museum were completed in 2016–2017 alongside buildings with modernized facades to restore the historical proportions of the block.