Best natural monuments around Alegrete showcase a diverse landscape, from ancient megalithic structures to prominent summits and waterfalls. This region offers opportunities to explore historical sites and natural formations. The terrain features varied elevations, providing different perspectives on the local environment.
Last updated: June 29, 2026
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Cruz do Cume is a small crossroads located in the Serra de São Mamede, in the district of Portalegre, in the northeast of Alentejo, near the city of Portalegre. It is located about 1 km downhill from Alto de São Mamede, which is the highest point in the mountain range at 1025 metres above sea level. This location is known as a good birdwatching spot, especially for species such as the crested tit and the linnet, and is surrounded by pine forests that are home to other birds such as the crested tit and the coal tit. Cruz do Cume also serves as a support and access point for outdoor activities, such as hiking and trail running, and is a stopover point for important races such as the Ultra Trail São Mamede (UTSM). In short, Cruz do Cume is an emblematic location in the Serra de São Mamede, valued for its nature, birdlife and relevance for mountain sports.
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The Dolmen del Mellizo, also known as Aceña Borrega or Anta de la Marquesa, has a thousand-year history. Although its exact origin is lost in time, it is believed that it was built between the 4th and 3rd millennia BC. This megalith follows the megalithic model known as “anta” in neighboring Portugal. The dolmen chamber is covered by a horizontal slab that protrudes from the roof, and although it is quite worn, the corridor and access to the chamber are still well preserved. In an archaeological excavation carried out in 1985, remains of funerary goods, such as ceramic fragments and arrowheads, were found. The Dolmen del Mellizo is a fascinating place that connects us with the people who built it thousands of years ago. 🌟
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The main waterfall in the São Mamede mountain range. Difficult access. As of April 2024, it will have a viewpoint with an exceptional view of the waterfall.
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Geosite whose name is given by the yellow lichens found on this prominent granite outcrop.
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Undoubtedly two of the most important specimens of the megalithic park and located in a colorful and picturesque landscape of Extremadura.
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One of the most important specimens of the megalithic park, this dolmen is in perfect condition and surprises with its size.
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Alegrete offers a diverse range of natural monuments, including ancient historical sites like the Dolmen del Mellizo-Anta de la Marquesa and Dolmen Datas 1 and 2, which provide a glimpse into megalithic history. You can also find impressive natural features such as the Cabroeira Waterfall and the Alto de São Mamede Summit (1,025 m), offering scenic views and challenging terrain.
Yes, the Ibirapuitã Biological Reserve is a significant conservation unit dedicated to preserving the pampas biome and its unique biodiversity. It protects diverse flora like native grasslands and riparian forests, and fauna such as the black howler monkey and the stone gecko. While public visitation is generally restricted due to its protected status, its role in safeguarding the region's natural heritage is vital.
The area around Alegrete is excellent for various outdoor activities. You can find numerous hiking trails, including moderate options like the Reguengo Trail (PR2) and Our Lady of Lapa Trail (PR1). For mountain biking enthusiasts, there are routes such as the Portalegre Castle – São Mamede Trail loop. You can explore more options on the hiking guide or the MTB trails guide for Alegrete.
Yes, there are several easy hiking options available. For instance, you can enjoy a pleasant walk on the Apartadura Reservoir – Ti Esperança Spring loop from Serra de São Mamede Nature Park, or the Cascata de Lúcia loop. These trails offer a more relaxed way to experience the natural beauty of the region. Find more easy routes in the easy hikes guide for Alegrete.
Absolutely. The Cabroeira Waterfall is the main waterfall in the São Mamede mountain range, offering an exceptional view. Another beautiful option is the Ribeira de Arronches Waterfall, though access to both can be challenging.
Alegrete is rich in historical natural monuments, particularly megalithic structures. The Dolmen del Mellizo-Anta de la Marquesa is a fascinating site believed to have been built between the 4th and 3rd millennia BC, with well-preserved corridors and chambers. The Dolmen Datas 1 and 2 are also significant specimens of the megalithic park, set in a picturesque landscape.
Yes, the area around the Alto de São Mamede Summit (1,025 m), specifically Cruz do Cume, is known as a good birdwatching spot. You might observe species such as the crested tit and the linnet, especially within the surrounding pine forests.
The Ibirapuitã River flows through Alegrete, offering scenic views and a tranquil environment. Its riverbanks are known for their natural beauty and diverse flora and fauna. It's an ideal spot for leisurely activities like picnics, contemplation of nature, and is also suitable for water sports and fishing, allowing visitors to immerse themselves in the local natural landscape.
Yes, the Gruta de Nossa Senhora (Grotto of Our Lady) near the center of Alegrete blends natural beauty with religious significance. It features a grotto with an image of Nossa Senhora Aparecida, Brazil's patron saint, and is surrounded by native trees, providing a peaceful atmosphere for reflection and relaxation.
The Ponte Natural do Tigre (Natural Bridge of the Tiger) was once a notable natural attraction in Alegrete, formed by millions of years of erosion. Unfortunately, this unique rock formation collapsed on May 14, 2021, due to natural erosion, and is no longer an existing natural monument.
Visitors particularly appreciate the historical depth of sites like the ancient dolmens, which connect them with people from thousands of years ago. The well-preserved structures and the picturesque landscapes surrounding them are frequently highlighted. Additionally, the challenging yet rewarding views from waterfalls and summits are highly valued by the komoot community.


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