Křimov

Kamencové jezero (Alum Lake) is a lake in the municipal area of Chomutov, Czech Republic. It is artificial in that it came into being due to 18th century mining.Kamencové jezero, at an altitude of 337 m (1,106 ft), was caused at the end of the 18th century by flooding the mines used between the 16th and 18th centuries. It occupies an area of 15.95 ha and the maximum depth is 3.4 m.The high content (about 1%) of alum in the water from Alum Lake prevents the lake from the growth of weed and anabaena. For that reason it is very frequently visited in the summer months.

Rocknet aréna is an indoor sporting arena located in Chomutov, Czech Republic. The capacity of the arena is 5,250 people. It replaced ČEZ Stadion Chomutov as home of the ice hockey team Piráti Chomutov. The arena opened in 2012 and has a capacity of 5,250 spectators.