What is a natural swimming pool, and why are there so many in Catalonia? These wild swimming spots, known as “gorgs” in Catalan, are small natural ponds that form along the course of a river, often where there is a drop in elevation or a patch of eroded rock that collects water. Catalonia’s diverse landscapes and mountainous terrain, criss-crossed by rivers and streams, make it an ideal place for these natural swimming pools to form — especially in areas like the Pre-Pyrenees, La Garrotxa, Montseny and several inland counties.But beyond their beauty, these spots are also living ecosystems and unique places to truly connect with nature. Natural formation and features of natural swimming pools These formations, sometimes referred to as rock pools or panholes, are natural pools carved into the rock by the steady flow of a river. This process of fluvial erosion is nature’s slow-motion masterpiece: water, carrying sand and stones, acts like sandpaper, gradually grinding down and deepening the riverbed, especially where there are waterfalls or changes in gradient. Catalonia’s geology encourages the formation of these natural pools. In limestone areas, water washes away the rock to create smooth, rounded shapes, while in granite or slate landscapes, the slower erosion leads to more rugged formations. The result is crystal-clear waters, often a striking turquoise, framed by riverside vegetation and the calming sound of flowing water. Where natural swimming pools are most commonly found Catalonia’s landscape is a perfect setting for the formation of natural swimming pools. These wild swimming spots are mainly found in three types of environments: Headwaters of Pyrenean and Pre-Pyrenean rivers: where rivers are born with force and flow down steep slopes, erosion is a constant. Regions like Ripollès, Alt Urgell and Pallars Sobirà are prime examples of these dynamic water landscapes. Mountain ranges of the Pre-Coastal Range: massifs such as Montseny, the Prades Mountains and Montsant act as natural barriers, forcing streams to carve deep gorges and pools as they make their way towards the sea. Mid-mountain counties: areas like La Garrotxa, Osona and Berguedà, with rich geology and a dense network of rivers and streams, are brimming with wild swimming spots tucked away in lush forests. The best wild swimming spots in Catalonia to unwind and connect with nature There’s no such thing as the “best” wild swimming spot on a map. The best one is simply the one that suits what you’re looking for. The true magic of these natural swimming pools lies in the experience they offer. What are you in the mood for today? A solo adventure, a family stroll or a trip that combines nature and culture? No matter what you feel like, Catalonia has a wild swimming spot for every kind of explorer. For those seeking silence: hidden wild swimming spots in the forested hills. If you long for silence broken only by the whisper of water, your ideal adventure lies in discovering these secluded sanctuaries. They often require a bit of effort to reach — but they reward you with absolute peace, far from the crowds. These are places to sit by the water’s edge, listen, read or simply do nothing at all, letting yourself become part of the landscape. For an easy getaway: accessible wild swimming spots with short walks For a gentle outing or stroll with the family, many of Catalonia’s most beautiful wild swimming spots are just a short walk away. These make the perfect introduction for little ones to fall in love with nature, with signposted trails that combine an easy walk with the reward of an idyllic setting. For the most curious explorers: routes that combine nature, swimming and landscape If you are looking for more than just a swim, Catalonia offers full experiences. These routes combine the discovery of the natural swimming pool with a dose of local history, passing old mills, Romanesque chapels and medieval bridges along the way. They are immersive experiences that show how water has shaped both the land and the culture. Hikes and trails to discover wild swimming spots in Catalonia Catalonia’s natural landscapes are full of surprising hidden corners, and many are waiting at the end of a good hike. To inspire your next adventure, here are some ideas for routes through Catalonia where you can combine hiking with a refreshing dip in natural swimming pools. El Ripollès, the source of Pyrenean rivers This county is home to the well-known Ruta dels 7 Gorgs (Route of the Seven Pools) along the River Tenes in Campdevànol, a clear example of how regulation is essential to protect natural spaces. But beyond this popular route, exploring the wider landscapes of El Ripollès offers the chance to discover the sources of rivers like the Ter and the Freser, allowing you to immerse yourself in pure Pyrenean water. La Garrotxa, water among the volcanoes In the Alta Garrotxa region, particularly around Sadernes, you’ll find hiking trails that follow the course of the River Llierca. Here, spectacular wild swimming spots have formed between towering rock walls, making this a perfect adventure for more experienced walkers. Montseny, the magic of the riverside forest Declared a UNESCO Biosphere Reserve, Montseny Natural Park is another key destination. Its streams — such as those of Arbúcies and Gualba — form hidden wild swimming spots beneath the shade of chestnut and beech trees, offering a way to reconnect with nearby nature. The Prades Mountains, an oasis on the Costa Daurada Tucked inland from the Costa Daurada, the Prades Mountains are a natural haven where red rock contrasts with the deep green of surrounding forests. Here, rivers like the Siurana and the Glorieta have carved out deep natural pools and basins known locally as “nius” (nests), such as the famous Niu de l’Àliga. River trails in the area are perfect for pairing nature adventures with visits to charming villages like Siurana or Prades. Tips for visiting wild swimming spots responsibly Enjoying these places is a privilege that comes with real responsibility. Their beauty is extremely fragile, and preserving it depends entirely on how we behave. To ensure future generations can also experience the magic of these wild swimming spots, it is essential to follow some basic principles of respect and care. Avoid overcrowding and check local rules Some of the natural swimming pools are under pressure from high visitor numbers, especially in summer. Before heading out, check the website of the local council or natural park. Many sites now have rules in place, such as visitor limits, advance booking systems or small conservation fees. The best way to visit is always outside of peak times, either off-season or during the week. For official information, you can check resources like Espais Naturals de Catalunya. Leave no rubbish, don’t light fires and keep noise to a minimum The golden rule in nature is to leave no trace. Take all your rubbish with you, including organic waste. Lighting fires is strictly forbidden due to the risk of wildfires. Likewise, avoid loud noises like music or shouting, which disturb local wildlife and interrupt the natural peace of the surroundings. Why you shouldn’t share exact locations on social media Sharing the exact location of a lesser-known wild swimming spot on social media can lead to unsustainable overcrowding and have a negative impact on the natural environment. If you want to post about your experience, keep the location general. By preserving the secrecy of some spots, you’re giving others the chance to discover them for themselves, while also helping to protect these special places. Impact of unregulated tourism on wild swimming spots When a natural swimming pool becomes overcrowded, the consequences can be devastating: riverside vegetation is trampled and disappears, leading to erosion. Sunscreens and other chemicals pollute the water, harming aquatic life. The pressure on these environments threatens the natural balance. Being a responsible visitor isn’t optional — it’s a must! Catalonia offers a whole world of wild swimming spots to explore. Pack your rucksack, lace up your boots, and set off to discover them. Let the sound of running water guide you, immerse yourself in the pools’ beauty — and most important of all, become their best protector. Your most refreshing and responsible adventure awaits.