Klínovec (German Keilberg), 1244 meters above sea level, is the mountain in Northwest Bohemia, the highest peak of the Ore Mountains, the highest point of the districts of Karlovy Vary and Chomutov, as well as the Karlovy Vary and the Ústí nad Labem regions. It is the fourth most prominent and the second most isolated mountain in the Czech Republic.

On the top plateau there is currently a closed hotel with a 24-meter high observation tower (newly repaired and set up) and a telecommunication tower 80 meters high. Cable car leads from Jáchymov to the top of the mountain. The lookout tower and the hotel are the oldest and highest buildings in the Ore Mountains. The northern slopes of the mountains are a popular ski resort.