and Poles returning from Germany. Also Ukrainians and Lemkos settled into the town during Operation Vistula. The town's name was changed into the historic Polish version of Słupsk by the Commission for the Determination of Place Names on 23 April 1945. It was initially part of Okręg III, comprising the whole territory of the former Province of Pomerania east of the Oder River. Słupsk later became part of Szczecin Voivodeship and then Koszalin Voivodeship, and in 1975 became the capital of the new province of Słupsk Voivodeship. Life in the devastated city was organized anew. In 1945, the first post-war craft workshops and public schools were opened, trams and a regional railway started to operate, and the amateur Polish Theater was established. In September 1946, the first Warsaw Uprising Monument in Poland was unveiled. From April 1947, the local Polish newspaper Kurier Słupski was published. The city became a cultural centre. In the 1950s, the Puppet Theater Tęcza, the Teachers' College and the Baltic Dramatic Theater were established. The puppet theatre Tęcza used to collaborate with the similar institution called Arcadia in Oradea, Romania, but the partnership ceased after 1989. The Millennium Cinema was one of the first in Poland to have a cinerama. The first Polish pizzeria was established in Słupsk in 1975. During the 1970 protests there were minor strikes and demonstrations. None were killed during the militia's interventions. After 1989 Major street name changes were made in Słupsk after the Revolutions of 1989. Also, a process of major renovations and refurbishments began, beginning in the principal neighbourhoods. According to the administrative reform of Poland in 1999, Słupsk Voivodeship was dissolved and divided between two larger regions: Pomeranian Voivodeship and West Pomeranian Voivodeship. Słupsk itself became part of the former. The reform was criticized by locals, who wanted to create a separate Middle Pomeranian Voivodeship. In 1998 a major riot took place after a basketball game. In 2014, Słupsk elected Poland's first openly gay mayor, Robert Biedroń. Geography Boundaries Administratively, the city of Słupsk has the status of both an urban gmina and a city county (powiat). The city boundaries are generally artificial, with only short natural boundaries around the villages of Kobylnica and Włynkówko on the Słupia River. The boundaries have remained unchanged since 1949, when Ryczewo became a part of the city. Słupsk shares about three-quarters of its boundaries with the rural district called Gmina Słupsk,