Located on a rocky massif in the Serra do Moradal, by the side of ER 238, the Zebro Viewpoint is naturally accessible due to the area’s topographical characteristics.
Overlooking the extensive valley traversed by the Zêzere River, it consists of a circular platform supported by a cantilever fixed to the rock. The construction will be entirely made of exposed reinforced concrete.
Access is via a ramp with a 110 cm high guardrail made of bars and a flexible stainless steel mesh. The guardrail of the platform is made of exposed concrete and has a height of 110 cm.
The circular structure appears suspended over the landscape and features two openings filled with walkable glass panels.
The viewpoint is integrated into the International Appalachian Trail, which traverses a large part of the mountain range, respecting the characteristics of the existing climbing routes in the area.
Project Info
Architects: Álvaro Siza Vieira
Year: 2022
Country: Vilar Barroco, Portugal
Photographs: Daniel Sousa
Coordinator: Rita Frois do Amaral
Collaborator: Paulo Silva
Structural Consultants: GOP, Gabinete de Organização e Projectos, Lda – Jorge Nunes da Silva, Ana Silva
Construction: Eliseu e Farinha – Sociedade de Construções, Lda – Pedro Baptista (director de obra)
Client: Câmara Municipal de Oleiros





























Sophie Tremblay is a Montreal-based architectural editor and designer with a focus on sustainable urban development. A McGill University architecture graduate, she began her career in adaptive reuse, blending modern design with historical structures. As a Project Editor at Arch2O, she curates stories that connect traditional practice with forward-thinking design. Her writing highlights architecture's role in community engagement and social impact. Sophie has contributed to Canadian Architect and continues to collaborate with local studios on community-driven projects throughout Quebec, maintaining a hands-on approach that informs both her design sensibility and editorial perspective.
