The Alum Lake (Kamencové jezero) holiday grounds act as a magnet for summer visitors to the town. You will find everything you need to enjoy a fine summer day here - accommodation (hotel, cottages, camping), food (restaurant, kiosks), and sport opportunities (water skiing track, the longest in the Czech Republic, mini golf, tennis, table tennis, volleyball, skittles). The Alum Lake is a worldwide rarity due to the composition of its water. The place used to be an alum mine, which is why nitrites, nitrates, chlorides and iron can be traced in the water. The water is very healthy, and as the environment is not favourable for blue-green algae, it is suitable for swimming throughout the season.