Natural monuments around Seia offer access to the Serra da Estrela mountain range, a region recognized as a UNESCO Global Geopark. This area is characterized by its significant geological history and diverse natural landscapes. Situated at the foot of the mountains, Seia serves as a starting point for exploring impressive geological formations and natural sites. The landscape features ancient glacial valleys, high-altitude lakes, and distinctive granite outcrops.
Last updated: June 23, 2026
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Covão dos Conchos is an artificial lagoon located in the Serra da Estrela Natural Park, Portugal, near the mountain village of Sabugueiro. Covão dos Conchos became famous for its bell-mouth spillway[1]. The spillway was built in 1955 to allow water to be transferred from the Ribeira das Naves River to Lagoa Comprida. It is part of the Serra da Estrela Hydroelectric System. This science fiction-style spillway became famous when photographs of the hole went viral on social media in 2016. Over the past 60 years, the growth of vegetation at the funnel's mouth has created extraordinary biodiversity and increased its ethereal allure. It is 4.6 meters high and 48 meters in circumference. The tunnel that collects the water is 1,519 meters long.
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The Lapa dos Dinheiros river beach is in perfect harmony with nature. Located in the parish of Lapa dos Dinheiros, on the Caniça River, a right-bank tributary of the Alva River, this bathing area is nestled in a mountainous landscape dominated by the Lapa Souto (south of Lapa) and imposing granite outcrops. With clear water, very appealing for swimming, the beach boasts the award for accessible beach and has lifeguards and a bar available to visitors. The rugged terrain of the valley causes the river to form a succession of small waterfalls nearby. The Lapa Souto, in addition to its valuable collection of centuries-old chestnut trees, is also home to a high level of biodiversity. From the bridge, a pedestrian path leads to the Moura Hole and a viewpoint over the Caniça Waterfalls. The Buraco da Moura is a natural cave system created by the sliding and accumulation of large granite blocks, which formed a complex system of rooms and galleries. How to get there? Once in Seia, follow the EN231 to S. Romão. From there, continue uphill for about 5 km, toward Loriga/Lapa, until you find the sign for Lapa dos Dinheiros on the left. Once inside the town, simply follow the beach signs. Coordinates: 40º 23′ 07.0″ N / 7º 41′ 50.1″ W
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A beautiful nature trail, about 9 km round trip to Covão dos Conchos. Unfortunately, on August 15th, the water couldn't reach the hole and thus reveal the waterfalls. It's a reservoir, part of the Serra da Estrela hydroelectric system. A funnel-shaped drainage structure that allows water to flow from this body of water to Lagoa Comprida. The spillway was built in 1955 to divert water from Ribeira das Naves to Lagoa Comprida. Over the past 60 years, moss and foliage have grown over the mouth of the funnel, creating a captivating spectacle. It is 4.6 meters high and 4.8 meters in circumference. The tunnel that collects the water is 1,519 meters long. It's a stunning place to visit, not only for the combination of human intervention and nature, but also for the surrounding landscape.
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Located at an altitude of approximately 1,600 meters, Lagoa Comprida is the largest water reservoir in the Serra da Estrela, intended for hydroelectric generation. This natural lake lies in a wide depression of glacial origin, approximately one kilometer long, which fed the Covão Grande glacier. Numerous glacial scars are visible along its banks, making this lake one of the most interesting geomorphological sites in the Serra da Estrela. Construction on this lake began in 1911, and by 1914, it was already six meters high. Later, in 1965, it underwent heightening work that increased its height to 28 meters, currently boasting a storage capacity of approximately 14 cubic hectometers, flooding an area of approximately 80 hectares. Small streams of water flow into this lagoon, as well as water retained in the Covões dos Conchos and Covões do Meio and carried to this lagoon through underground tunnels.
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The Serra da Estrela Natural Park is something truly special. This 1,000-square-kilometer park, spread across six municipalities, was the first and currently the largest protected natural park in Portugal. It is home to the highest point on the Portuguese mainland, the country's only ski slope, the source of two important rivers, and a fascinating, alpine-like landscape formed by glaciers.
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At exactly 1993 meters above sea level, Torre is the highest point in mainland Portugal, where the only ski resort is located. The landscape on the upper plateau of the Serra da Estrela is like a sprinkling of granite rocks over low scrub and patches of snow and ice, which the sun threatens to melt soon in the summer and which always returns the following winter. In winter, it sometimes becomes inaccessible.
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At an altitude of 1,700 metres, in the heart of the Serra da Estrela, stands the impressive Nave da Mestra, a granite colossus that holds a centuries-old secret: the Barca Herminius. Built in 1910 by craftsmen from Manteigas, who climbed the mountain with mules and hydraulic jacks, this house nestled between rocks looks like something out of a fairy tale. It is said that it was designed as a summer retreat by the Matos Preto family, but the legend goes further: clandestine meetings against the regime, led by judge José Pereira de Matos, are said to have taken place there. That is why, to this day, it is called the Judge's House. Running along these trails is a real spectacle!
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Nestled on the banks of the Caniça river, a tributary of the Alva river, this beach area is a haven in the middle of a mountainous landscape, where ancient chestnut trees and granite blocks shape the scenery. The crystal-clear, inviting water is perfect for a refreshing dip. The beach, which has been awarded the title of accessible, has lifeguards and a bar, making the experience even more enjoyable.
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The region around Seia, part of the Serra da Estrela UNESCO Global Geopark, is rich in natural features shaped by ancient geological processes. You can explore the vast Long Lake (Lagoa Comprida), a glacial lake and the largest reservoir in the area, or witness the unique bell-mouth spillway at Covão dos Conchos Trail. The iconic granite spire of Cântaro Magro and the U-shaped Zêzere Glacial Valley also showcase the powerful glacial forces that shaped this landscape.
Yes, several natural sites around Seia are suitable for families. The Lapa dos Dinheiros River Beach is an excellent option, offering crystal-clear water for swimming, lifeguards, and a bar, all within a beautiful mountainous setting. The Torre (Serra da Estrela Summit) is also family-friendly, as you can drive directly to the highest point in mainland Portugal for panoramic views.
The Serra da Estrela is a geological marvel, primarily known for its extensive glacial landforms. You'll encounter U-shaped valleys like the Zêzere Glacial Valley, numerous glacial lakes, polished rocks, and impressive granite outcrops, some over 300 million years old. Sites like Long Lake clearly display glacial scars along its banks, offering a direct look into the region's icy past.
The area around Seia offers a wide range of outdoor activities. You can find numerous routes for hiking, mountain biking, and cycling. For hiking, consider trails like the Covão dos Conchos Trail or the Caniça Trail. Cyclists can explore various routes, including challenging loops around Serra da Estrela. For more options, check out the guides for Cycling around Seia and MTB Trails around Seia.
Yes, Torre (Serra da Estrela Summit), the highest point in mainland Portugal at 1,993 meters, is easily accessible by a paved road. From the summit, you can enjoy expansive panoramic views of the surrounding mountainous terrain. It's a symbolic landmark and a popular spot for experiencing the high elevations of the Serra da Estrela.
Yes, the region blends natural beauty with intriguing man-made elements. The Casa do Juiz (Nave da Mestra) is a fascinating example, a house built into a granite colossus at 1,700 meters altitude, with a rich history and local legends. Additionally, the bell-mouth spillway at Covão dos Conchos Trail, while artificial, has become a natural monument due to its unique appearance and integration with the landscape.
Visitors frequently praise the magnificent landscapes, especially the stunning blue skies and the refreshing altitude. Many enjoy the unique sights like the water flowing into the 'drain' at Covão dos Conchos. The serene beauty of glacial lakes and the impressive geological formations are also highly appreciated. The opportunity for a short swim in the water reservoirs or at river beaches like Lapa dos Dinheiros River Beach adds to the enjoyment after a walk.
Many trails in the Serra da Estrela, including those leading to sites like Covão dos Conchos, can be challenging due to loose stones, scree, and uneven terrain. It is highly advisable to wear good walking shoes with flexible ankles. During wet periods, parts of the path can be particularly challenging to keep your feet dry. Always carry enough food and drink, and in sunny weather, sun protection is essential as there's often no shade.
Yes, some natural attractions offer facilities. For instance, Lapa dos Dinheiros River Beach has a bar available to visitors. At Torre (Serra da Estrela Summit), you'll find shops where you can buy local products like cheese and meats. For other areas, it's recommended to plan ahead and bring your own provisions, especially for longer hikes, as facilities might be sparse.
The Serra da Estrela region offers different experiences throughout the year. While summer (August) is popular, leading to more people on trails, the heat is often tempered by the altitude. October can offer beautiful days, though previous heavy rains might make paths challenging. Winter brings snow and ice, making some areas, like Torre, sometimes inaccessible but offering a unique snowy landscape. Spring and early autumn generally provide pleasant weather for hiking and exploring.
The Serra da Estrela is a Natural Park and a UNESCO Global Geopark. While general access to most natural monuments and trails is open, it's always good practice to respect local regulations, especially concerning waste disposal and fire safety. For specific activities or protected areas, it's advisable to check with local visitor centers for any permit requirements or restrictions, particularly for dog access or camping.
The region plays a significant role in hydroelectric power. Long Lake (Lagoa Comprida) is the largest water reservoir in the Serra da Estrela, specifically intended for hydroelectric generation. Its construction began in the early 20th century and was later heightened to increase its storage capacity. The intriguing Covão dos Conchos is also part of this system, designed to transfer water between rivers for power generation.


Extend your search for the best caves by checking out these guides of the top ones around Seia: