Veľké Biele pleso is a glacial lake surrounded by many beautiful mountain peaks. Despite its name, it's barely a meter deep and in the past, it was famous for a trail used by smugglers that led through this area. Nowadays, there are various hiking trails leading to it, most of them take at least half a day and are considered to be moderately challenging or demanding hikes.
Wikipedia (Slovak) https://sk.wikipedia.org/wiki/Ve%C4%BEk%C3%A9_Biele_pleso
More Information http://www.vypadni.sk/sk/velke-biele-pleso
Address 05953, Slovakia
Coordinates 49°13'18.428" N 20°13'51.772" E