About one of the biggest polish castle
Książ (German: Schloss Fürstenstein) is a castle in Wałbrzych in Lower Silesian Voivodeship, Poland. It was built in 1288-1292 under Bolko I the Strict. It lies within a protected area called Książ Landscape Park, overlooks the Pełcznica River and is one of the city's main tourist attractions.
he original fortification was destroyed in the year 1263 by Ottokar II of Bohemia. Bolko I, Duke of Świdnica and Jawor built a new castle between 1288 and 1292. Duke Bolko II of Świdnica died in 1368 without having children with his wife Agnes von Habsburg. After her death in the year 1392 King Wenceslaus IV of Bohemia obtained the castle. In 1401 Janko from Chociemice obtained the castle. The Bohemian Hussites occupied the castle between 1428-1429. In the year 1464 Birka from Nasiedla obtained the castle from the Bohemian crown. He sold it to Hans von Schellendorf. This second castle was destroyed in 1482 by Georg von Stein. In the year 1509 Konrad I von Hoberg (from 1714: Hochberg) obtained the castle hill. The Hochberg family owned the castle until the 1940s.
Źródło: https://en.wikipedia.org/wiki/Ksi%C4%85%C5%BC
Białowieża National Park
Białowieża National Park (Polish: Białowieski Park Narodowy) is a National Park in Podlaskie Voivodeship, in Eastern Poland adjacent with the border with Belarus. The total area of the park is 152.2 square kilometres (58.8 sq mi). It is located 62 km (39 mi) southeast of Białystok (Poland). It is known for the protection of the best preserved part of the Białowieża Forest, Europe's last temperate primaeval forest fragment that once stretched across the European Plain. It is home to the world's largest population of European bison (Polish: żubr), the continent's heaviest land animals.2 The border between the two countries runs through the forest, the Belovezhskaya Pushcha National Park is adjacent on the Belarus side of the border. There is a border crossing for hikers and cyclists within the forest.
Źródło: https://en.wikipedia.org/wiki/Bia%C5%82owie%C5%BCa_National_Park
Out on the weekend of May
May weekend is one of the first opportunities for short tourist trips. Picnic can spend not only a home barbecue, but also for mountain walks or visiting Polish monuments of nature, and above all walks of large parks and greenery around the beautiful lakes. This way you can not only eat well, but also to spend time in the fresh air and the opportunity to see the history of Polish tourism. Weather in early May is sometimes different, but certainly much more conducive to family walks in the mountains, than the weather prevailing during the cold weather. In contrast, people who visit the large parks, may in designated areas also organize family camping.