The Orava Reservoir is the largest dam lake in Slovakia — a vast, shimmering expanse of water nestled among forested hills in the north of the country, right on the border with Poland. Whether you come for watersports, birdwatching, fishing or simply to soak up the scenery, this place has a way of leaving a lasting impression.

Covering 35 km² when full, the reservoir holds a quietly haunting secret: several entire villages lie submerged beneath its surface, flooded when the dam was completed in 1954. All that remains visible above the waterline is a small hill topped by an 18th-century church — the Slanica Island of Art, one of the most atmospheric spots in the entire region. Summer brings golden beaches, sailing, windsurfing, water cycling and boat excursions around the island, while in hard winters the frozen lake transforms into a playground for ice walks and winter sports.

• Námestovo — main town beside the reservoir, starting point for beaches and marinas; reachable by car or bus from Žilina
• Slanicka Osada, Prístav and Studnička — popular recreation areas along the western and southern shores, accessible by local road

• Scenic boat trips around Slanica Island run regularly during summer
• The island church hosts a permanent exhibition of Orava folk art, sculpture and painting
• The reservoir is a key stop on bird migration routes — bring binoculars for waterfowl sightings
• Fishing is permitted; species include pike-perch, carp, pike, huchen, eel and catfish
• Winter swimming has been a local tradition since 1975, kept alive by the 'Orava otužilci' cold-water club

A long-distance swim covering the full 13.5 km length of the reservoir has been completed by only a handful of athletes — a testament to just how impressively large this hidden gem truly is.