Água de Pau Aqueduct and the Muro das Nove Janelas (“Wall of the Nine Windows”) are integral parts of a historic water supply system. Constructed between the 17th and 18th centuries, this system was designed to transport water from the island’s interior springs to the city of Ponta Delgada, addressing the city’s water scarcity at the time.

The aqueduct features a series of arches that traverse the island’s valleys and hills, showcasing the engineering prowess of the era. The Muro das Nove Janelas is a notable section of this aqueduct, distinguished by its nine consecutive arches, which create a striking visual along the route.

Visiting these structures offers a unique glimpse into São Miguel’s historical infrastructure. Walking along the preserved sections allows for appreciation of the ingenuity of 17th and 18th-century builders and provides picturesque views of the surrounding scenery.

The Água de Pau Aqueduct and the Muro das Nove Janelas are significant cultural landmarks, reflecting the island’s adaptation to its environment and the importance of water management in its development. Their enduring presence serves as a reminder of the community’s resilience and resourcefulness.