Plzen is a city located in the western part of the Czech Republic. It is famous for its picturesque historical center and its brewing tradition, with the Pilsner Urquell brewery being the most well-known. Besides the name Plzen, the city has several synonyms, including Pilsen, Pilsno, and Plsno. These terms are often used interchangeably and refer to the same place. They have derived from the original name of Plzeň, which comes from the Czech word for "swampy area" since the city is located in the flatlands along the Radbuza river. Regardless of the name used, Plzen is a charming destination that offers plenty of unique experiences for visitors.