Wonderful polish lakes
Masuria and the Masurian Lake District are known in Polish as Kraina Tysiąca Jezior and in German as Land der Tausend Seen, meaning "land of a thousand lakes." These lakes were ground out of the land by glaciers during the Pleistocene ice age around 14,000 - 15,000 years ago, when ice covered northeastern Europe. From that period originates the horn of a reindeer found in the vicinity of Giżycko.96 By 10,000 BC this ice started to melt. Great geological changes took place and even in the last 500 years the maps showing the lagoons and peninsulas on the Baltic Sea have greatly altered in appearance. More than in other parts of northern Poland, such as from Pomerania (from the River Oder to the River Vistula), this continuous stretch of lakes is popular among tourists. The terrain is rather hilly, with connecting lakes, rivers and streams. Forests account for about 30% of the area.9798 The northern part of Masuria is covered mostly by the broadleaved forest, while the southern part is dominated by pine and mixed forests
Źródło: https://en.wikipedia.org/wiki/Masuria#Landscape
Biebrzański PN
Biebrza National Park is one of the more willingly visited National Parks in Poland. Take in these surroundings, because that is where we have the opportunity to truly relax in nature. Admittedly, the area of Biebrza National Park is very special. There is a lot of swamps, which make the area flora and fauna deserve attention not only people fascinated by nature. It is worth to visit these pages, because in the Biebrza National Park will find plenty of hiking trails, so that we can regenerate and really relax. Trip to the area is a particularly good option to spend a holiday vacation or weekend trip out of town.
Wroclaw tourist hotspots
Ostrów Tumski is the oldest part of the city of Wrocław. It was formerly an island (ostrów in Old Polish) known as the Cathedral Island between the branches of the Oder River, featuring the Wrocław Cathedral built originally in the mid 10th century.
The 13th century Main Market Square (Rynek) prominently displays the Old Town Hall. In the north-west corner of the market square there is the St. Elisabeth's Church (Bazylika Św. Elżbiety) with its 91,46 m tower, which has an observation deck (75 m). North of the church are the Shambles with Monument of Remembrance of Animals for Slaughter (pl). Salt Square (now a flower market) is located at the south-western corner of the market square. Close to the square, between Szewska and Łaciarska streets, there is the St. Mary Magdalene Church (Kościół Św. Marii Magdaleny) established in the 13th century.
Źródło: https://en.wikipedia.org/wiki/Wroc%C5%82aw