|• Total||4.78 km2 (1.85 sq mi)|
|• Density||2,800/km2 ( 7,300/sq mi)|
|Postal code||64-200, 64-201|
Wolsztyn [ˈvɔlʂtɨn] (German: Wollstein) is a town in western Poland, on the western edge of Greater Poland Voivodeship (from 1975 to 1998 it was in Zielona Gora Voivodeship). It is the seat of Wolsztyn County, and of the smaller administrative district of Gmina Wolsztyn.
Wolsztyn is famous as the location of a locomotive roundhouse, which is the last place in Europe to supply steam locomotives for regular, timetabled train services on the national railway network. As of 2011 these services run to Leszno and Zbąszynek. The site also includes a railway museum featuring restored locomotives. An annual parade of locomotives takes place at the start of May – the 2007 event, which also celebrated the roundhouse's centenary, attracted 20,000 visitors.
Wolsztyn also includes a large lake (Jezioro Wolsztyńskie; Wolsztyn Lake), next to which is a former palace (built in Classical style in the early 20th century, and now used as a hotel and restaurant), and a park. The town has a parish church dating from the 18th century, as well as several other museums.
 Famous people born in or connected to Wolsztyn
- Bruno Asch (1890–1940), politician (SPD) and last mayor of Höchst am Main, Germany
- Heinrich Graetz (1817-1891), Jewish historian. Attended yeshiva in Wolsztyn from 1831-1836.
- Max Samuel Grifenhagen - (1913–1916) Sheriff of New York County, present day Borough of Manhattan (Father, Benjamin William Grifenhagen was born in Wolsztyn)
- Józef Maria Hoene-Wroński — mathematician known for the Wronskian determinant and numerous outlandish claims
- Hans Jürgen Kallmann (1908–1991) — German painter
- Robert Koch — German microbiologist
- Robert Kubaczyk - Polish athlete
- Hans von Kusserow (1911−2001), artist
- Ingeborg von Kusserow (born 1917), actress
- Stanisław Piosik — Polish politician
- Otto Plathner (1811–1885), lawyer and politician of the Frankfurt National Assembly of the German People
- William Rosenau (1865-1943), rabbi
- Adam Skórnicki- winner of the 2008 Individual Speedway Polish Championship
 Major corporations
- Inter Groclin Auto SA Wolsztyn + Grodzisk Wielkopolski
- The Wolsztyn Experience, a society for the preservation of steam railways in Poland
- Gallery of images of Wolsztyn locomotive roundhouse
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