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Photo: Michael Kümmling, CC BY 2.5 via Wikimedia Commons
Lake Mácha is a pond at Doksy in the Liberec Region of the Czech Republic. With an area of 2.84 km2 (1.10 sq mi) it is the largest pond in the region and therefore is called a lake, despite its artificial origin. It is a popular summer holiday destination. It is associated with the work of the poet Karel Hynek Mácha, after whom it got its current name.
© OpenStreetMap contributors
A curious rock structure, which looks like an organ, is definitely worth a visit. The rock structure is made of columnar basalt. There is nothing like that in the Czech Republic. It is located in the little town Kamenický Šenov, 17 kilometres from Česká Lípa.