The picturesque Opárenské Vallye protected from the top by the ruin of the mediaeval castle Oparno stretches between Malé Žernoseky and Velemín. Since 2005 at the disposal of the visitors is a modern area, thanks to artificial surfaces equipped for sports at the recreational and competition levels. Available is the background for tennis, small and large football, volleyball, foot-netball, basketball, floorball, handball, badminton, pétanque, the necessary equipment may be borrowed. In 2006 the offer will be extended by the newly built children‘s playground, round for condition run, Nordic walking and hippo-tourism, prepared is also the construction of own accommodation facility with a tourist social centre. The base in the Opárenské Valley offers both activities inside the area, and in the surrounding nature that is an ideal place for tourism, condition run, riding horses and cycling. The area is situated directly on the spinal cycling arterial road Most – Doksy, by the ferry on the Labe river accessible is the not distant European cycling arterial road Greenways Hamburg – Vienna.
The protected landscape area, from the point of view of variety of plant and animal species one of the richest natural localities in the Czech Republic, is situated along both banks of the river Labe. The characteristic appearance of the articulated landscape with basalt and phonolite clusters of hills and separately located massives of domes and cones was affected by the Tertiary period volcano activity. The highest mountain of the České středohoří is Milešovka (837 m); from the gallery of the tower of the local meteorological observatory the round view opens of the surrounding tops, the range of the Krušné hory and the Polabská nížina as far as to the Říp. Milešovka also holds the title of the windiest Czech mountain. The statistics state that on average for 280 days a year strong wind blows there and only seven days there is calm there. Thanks to its isolated position Milešovka works as a lightning rod that directly attracts lightnings. Annually as many as 50 storms are recorded, the record is five lightning strokes to the building of the observatory during 15 minutes.