There is a lot of rare specimens of both flora and fauna.
Wrocław ("?vr?tsw?f"; Polish pronunciation: "?vr?t?swaf" ( listen), German: Breslau, "b??s?la?"; Latin: Vratislavia) is the largest city in western Poland.
Wrocław is the historical capital of Silesia and Lower Silesia.
Today, it is the capital of the Lower Silesian Voivodeship.At various times in history, it has been part of the Kingdom of Poland, Bohemia, Hungary, the Austrian Empire, Prussia, and Germany. It became part of Poland in 1945, as a result of the border changes after the Second World War. The population of Wrocław in 2014 was 634,487, making it the fourth-largest city in Poland. Wrocław classified as a global city by GaWC, with the ranking of high sufficiency and living standard. It was among 230 cities in the world in the ranking of the consulting company Mercer - "Best City to Live" in 2015 and the only Polish city in this ranking has been recognized as a city growing at the business center. In 2016, the city will be the European Capital of Culture and the World Book Capital. Also, Wrocław will host the Theatre Olympics, World Bridge Games and the European Film Awards in 2016, IFLA Annual Conference and World Games in 2017Źródło: https://en.wikipedia.org/wiki/Wroc%C5%82aw
Lower Silesia (Polish: Dolny Śląsk; Czech: Dolní Slezsko, Latin: Silesia Inferior; German: Niederschlesien; Silesian German: Niederschläsing; Silesian: Dolny Ślůnsk) is the northwestern part of the historical and geographical region of Silesia; Upper Silesia is to the southeast. Throughout its history Lower Silesia has been under the control of the medieval Kingdom of Poland, the Kingdom of Bohemia and the Austrian Habsburg Monarchy from 1526.In 1742 nearly all of the region was annexed by the Kingdom of Prussia and became part of the German Empire in 1871, except for a small part which formed the southern part of the Lower Silesian Duchy of Nysa and had been incorporated into Austrian Silesia in 1742.
After 1945 the main part of the former Prussian Province of Lower Silesia fell to the Republic of Poland, while a smaller part west of the Oder-Neisse line remained within East GermanyŹródło: https://en.wikipedia.org/wiki/Lower_Silesia.