The water source is a subterranean stream flowing through a massive salt mountain located 230 meters below the surface.
The salinity of the water reaching the surface remains constant at approximately 230 grams of salt per liter.
The wooden salt houses are built on stilts to prevent rot and allow for natural air circulation.
The first documented reference to the salt production at this site dates back to 1177.
Salt crystals are harvested by hand using traditional wooden rakes and shovels.
The salt produced here is known as 'white gold' due to its purity and historical economic value.
The evaporation ponds are shallow rectangular basins that rely entirely on solar evaporation.
Traditional wooden structures were originally used solely for storing salt, not as dwellings.
Salinas de Rio Maior is an inland salt production site that has operated continuously for over 800 years. The salt is harvested from a deep underground spring that flows through rock salt deposits, creating water seven times saltier than seawater. The site features a collection of traditional wooden salt houses known as 'palheiros' that flank the evaporation pans. Salt production remains largely manual, utilizing the same ancient techniques passed down through generations. The facility currently functions as a living museum, commercial salt farm, and culinary destination. Visitors can walk along the narrow paths between the salt pans to observe the harvesting process. The surrounding area includes specialized shops selling fleur de sel and various salt-based products. Several restaurants on-site incorporate the locally harvested salt into their traditional Portuguese cuisine. The landscape is unique for being located several kilometers from the coast, defying the typical geography of salt extraction.
From the slight incline overlooking the valley to capture the symmetrical rows of wooden huts.
Wear comfortable, flat walking shoes to navigate the uneven gravel and dirt paths between the pans.
Purchase the locally produced fleur de sel in the gift shops, as it is harvested directly from the surface of the pans.
Visit during the height of summer to witness the most intense evaporation and harvesting activity.
Avoid walking near the edges of the salt pans as the wooden borders can be slippery or unstable.
The site is open year-round, but salt harvesting is significantly reduced or absent during rainy winter months.
Do not touch or enter the evaporation pans; walk only on designated paths.
