This refers to the appreciation and admiration of open-air swimming pools around the world. Open-air swimming pools offer a unique experience, combining the natural beauty of outdoor settings with the recreational benefits of swimming. They vary greatly in design, size, and location, from serene natural pools in remote locations to large public pools in urban centers. Some famous open-air swimming pools include the Serpentine Swimming Club in London, the Blue Lagoon in Iceland, and the infinity pools in Bali.