Outdoor swimming pools are popular destinations for both leisure and fitness. They can be found in various locations around the world, from natural hot springs to urban parks. Some famous outdoor swimming pools include the Serpentine Swimming Club in London, the Blue Lagoon in Iceland, and the Badeschloss in Berlin. Enjoying these pools often involves soaking in natural waters, swimming laps, or simply relaxing by the water's edge. It's important to consider the climate, safety regulations, and cultural norms when visiting outdoor swimming pools globally.