Places you need to visit - Wroclaw
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
Contact with nature - the higher parts of the mountains
Holiday in the Tatras is one of the ways to spend your time in a pleasant atmosphere in beautiful surroundings. Take to the area especially outside the peak tourist season, when the trails are much less crowded and we can enjoy the direct contact with nature. Contact with nature in places such as the higher parts of the mountains is the perfect way to relax, especially for those who enjoy physical activity. Choosing to go hiking in the mountains is in fact a matter of a few or even several hours' walk. It is worth remembering when planning a route. Surely you must adjust the difficulty level route to the own skills and physical condition.
WIkipedia - polish culture:
The culture of Poland is closely connected with its intricate thousand-year history.1 Its unique character developed as a result of its geography at the confluence of various European regions. With origins in the culture of the Early Slavs, over time Polish culture has been profoundly influenced by its interweaving ties with the Germanic, Latinate and Byzantine worlds as well as in continual dialog with the many other ethnic groups and minorities living in Poland.2 The people of Poland have traditionally been seen as hospitable to artists from abroad and eager to follow cultural and artistic trends popular in other countries. In the 19th and 20th centuries the Polish focus on cultural advancement often took precedence over political and economic activity. These factors have contributed to the versatile nature of Polish art, with all its complex nuances.2 Nowadays, Poland is a highly developed country that retains its tradition.
Źródło: https://en.wikipedia.org/wiki/Culture_of_Poland