Best attractions and places to see around São Martinho include a variety of natural and historical sites, primarily located within the mountainous Serra da Estrela region. This area is characterized by its high-altitude lakes, river beaches, and unique geological formations. Visitors can explore glacial valleys, man-made reservoirs, and historical structures nestled among granite landscapes. The region offers diverse outdoor experiences, from tranquil waterside activities to exploring ancient monuments.
Last updated: May 20, 2026
Highlight (Segment) • Natural Monument
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Highlight • Lake
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Highlight • Beach
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Highlight • Historical Site
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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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Located within the Planalto Superior biogenetic reserve, the Rossim Valley is a unique location of great scientific, environmental, and scenic value that deserves to be protected and enhanced. Although it is an artificial lake, over time, conditions have been created that have transformed this area into an excellent leisure and recreation area that attracts countless tourists. The Vale do Rossim recreation center is located at an average altitude of 1,437 meters. Before the dam was built, it was one of the best high-altitude pastures in the municipality of Gouveia. The area has almost always been frequented by transhumance herds, flocks that gathered here from São João to the Sr. do Calvário festivities in August.
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At over 1,400 meters above sea level, the Rossim Valley Reservoir is a haven of granite, pine trees, and crystal-clear waters in the heart of the Serra da Estrela Mountains. It's the perfect setting for strolls, summer swims, and admiring nature in all its splendor, one of Portugal's highest jewels.
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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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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 São Martinho, primarily within the Serra da Estrela, offers several stunning natural features. Don't miss the unique Covão dos Conchos Trail, known for its funnel-like dam overflow and magnificent landscapes. Another highlight is Long Lake, the largest water reservoir in the Serra da Estrela, situated at approximately 1,600 meters altitude with visible glacial scars. For a refreshing experience, visit Lapa dos Dinheiros River Beach, nestled on the banks of the Caniça river amidst ancient chestnut trees and granite blocks.
Yes, you can explore the intriguing Casa do Juiz (Nave da Mestra). This impressive granite colossus, built in 1910 at 1,700 meters altitude, is steeped in local history and legend, said to have been a summer retreat and a site for clandestine meetings.
The area is excellent for outdoor enthusiasts. You can enjoy various hiking trails, including easy routes like the 'View of Serra da Estrela loop from Sabugueiro' or the 'Vale do Rossim Reservoir loop'. For more challenging adventures, consider the 'Covão dos Conchos Trail – Long Lake loop'. Cycling is also popular, with options like the 'Sabugueiro – Vale do Rossim Reservoir loop'. You can find more details on these activities in the hiking guide and road cycling guide for São Martinho.
Absolutely! The Covão dos Conchos Trail is listed as family-friendly, offering an engaging walk through unique landscapes. The Vale do Rossim Reservoir is also a great spot for families, perfect for strolls and summer swims in its crystal-clear waters. Additionally, Lapa dos Dinheiros River Beach is an accessible beach with lifeguards and a bar, making it ideal for a family day out.
Hiking trails around São Martinho, particularly those leading to attractions like Covão dos Conchos Trail, often feature varied terrain. You can expect areas with scree and loose stones, requiring good footwear and flexible ankles. Other paths might traverse pine forests, granite landscapes, and areas with uneven surfaces. Always be prepared for changes in elevation, as many attractions are at high altitudes.
The Lapa dos Dinheiros River Beach has been awarded the title of an accessible beach, making it a suitable option for visitors with mobility considerations. It features clear water, lifeguards, and a bar, all set in a beautiful natural environment.
For breathtaking views, consider the Covão dos Conchos Trail and Long Lake, both offering magnificent landscapes and vantage points over the Serra da Estrela. The Casa do Juiz (Nave da Mestra), perched at 1,700 meters, also provides impressive vistas of the surrounding granite colossus and mountains.
While the guide doesn't specify a single 'best' time, visitor tips for the Covão dos Conchos Trail mention that the heat is tempered by altitude, suggesting summer can be pleasant. However, walking in October after heavy rains can make paths challenging due to wet conditions. For summer swims and strolls, the Vale do Rossim Reservoir is ideal. Always check local weather forecasts before planning your trip, especially for high-altitude areas.
Yes, at Lapa dos Dinheiros River Beach, you'll find a bar available to visitors, along with lifeguards. For other attractions, it's advisable to bring your own food and drink, especially for longer hikes, as facilities might be limited in the more remote, high-altitude areas of the Serra da Estrela.
Visitors frequently praise the magnificent landscapes and unique natural features, such as the 'drain' at Covão dos Conchos Trail. The crystal-clear waters of places like Lapa dos Dinheiros River Beach and Vale do Rossim Reservoir are highly appreciated for refreshing dips and relaxation. The sense of being in nature, surrounded by granite and pine trees, and the impressive views from high-altitude lakes are also commonly highlighted.
Yes, swimming is a popular activity in certain areas. The Lapa dos Dinheiros River Beach offers crystal-clear, inviting water perfect for a refreshing dip, complete with lifeguards. The Vale do Rossim Reservoir is also an excellent spot for summer swims in its high-altitude, clear waters.
Long Lake, or Lagoa Comprida, is significant because it is the largest water reservoir in the Serra da Estrela, located at approximately 1,600 meters altitude. It's a natural lake of glacial origin, and you can observe numerous glacial scars along its banks, making it one of the most interesting geomorphological sites in the region. It also plays a role in hydroelectric generation.


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