His son, Juan Federico Muntadas, shaped the park by making changes to paths and walkways and planting. Closest to the circuit of the 19th-century Spanish spas, and aware of the responsibility of conserving the landscape and the precarious state of the monastery, Campeny bought the abandoned monastery and its surroundings, and tried several viable businesses. These include a spa, a hotel and a salmon farm. In 1860, after discovering the Iris cave, it was opened to the public. In 1867, he created the first fish farm in Spain, and naturalized brown trout and Iberian crayfish in the waters of the Piedra River. Subsequently, in 1886, the Fisheries Centre of the Monasterio de Piedra was ceded to the Spanish Government. The center continues today to have rivers full of species for reforestation. The result of these activities is the garden that we know today was declared "Paraje Pintoresco Nacional" in 1940.