The construction of the cistern is linked to the existence of a water deposit that passes through the site: historical documents explain that in 1361 the crown granted the ownership and use of the water to Bartomeu de Climent. At the beginning of the 19th century, a royal concession was granted to Jacint Roig and, later, in 1876, it was acquired by Salvador Homs i Roca with the obligation to improve the property.
The Rei Martí Stormwater Cistern was discovered in 2001. The cistern is located next to the Bellesguard Tower, the unmistakable castle-shaped building by the architect Antoni Gaudí, built on the remains of the last fortress in which King Martí I L'Humà (Martin the Humane) lived between 1408 and 1410. This is where the name of the cistern comes from. The 585 m2 site consists of 7 longitudinal chambers filled with arches and 30 pillars. It is directly underneath a green space that will be turned into a recreational area for local residents.