Tatras - high polish mountains
The Tatra Mountains, Tatras or Tatra (Tatry either in Slovak (pronounced ?tatri) or in Polish (pronounced ?tatr?)- plurale tantum), are a mountain range that form a natural border between Slovakia and Poland. They are the highest mountain range in the Carpathian Mountains. The Tatras should be distinguished from the Low Tatras (Slovak: Nízke Tatry) which are located south of the Tatra Mountains in Slovakia.
The Tatra Mountains occupy an area of 785 square kilometres (303 sq mi), of which about 610 square kilometres (236 sq mi) (77.7%) lie within Slovakia and about 175 square kilometres (68 sq mi) (22.3%) on the territory of Poland. The highest peak, called Gerlach, at 2,655 m (8710 ft) is located north of Poprad. The highest point in Poland, Rysy, at 2,499 m (8200 ft) is located south of Zakopane.
Źródło: https://en.wikipedia.org/wiki/Tatra_Mountains
Welcome in Masuria
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
Sudety mountains - where are they?
The range stretches from eastern Germany along the northern border of the Czech Republic to south-western Poland. The highest peak of the range is Sněžka (Polish: Śnieżka) in the Krkonoše (Polish: Karkonosze) mountains on the Czech Republic?Poland border, which is 1,603 metres (5,259 ft) in elevation. The current geomorphological unit in the Czech part of the mountain range is Krkonošsko-jesenická subprovincie ("Krkonoše-Jeseníky").
The Krkonoše Mountains (also called the Giant Mountains) have experienced growing tourism for winter sports during the past ten years. Their skiing resorts are becoming a budget alternative to the Alps
Źródło: https://en.wikipedia.org/wiki/Sudetes