Pocuvadlo, the biggest 'tajch' which is one of many articially created water reservoirs to supply the mines in the area in the 18th century. It's one of the most beautiful sights in the area and a usual starting point of a hike to Sitno.
You can go for a swim, relax on the shore or enjoy a meal in one of the small restaurants scattered around.
There is also a nearby parking space with a fee to pay.
Address 75 Počúvadlianske jazero, Počúvadlianske Jazero 96901, Slovakia
Coordinates 48°24'16.844" N 18°51'22.649" E