Sundlaugin Borg in Grímsnesi is a cool spot near Selfoss where you can splash around and relax. They've got a 25-meter pool, hot tub, water slide, sauna, and even a sports hall for some extra fun. Plus, there's a children's pool for the little ones to enjoy. Whether you're looking to swim laps or just chill out, this place has got you covered. And hey, they've even got a gym if you're feeling extra motivated. So grab your swimsuit and towel and head on over for a good time!