The Hospital de Sant Pau descends from Barcelona’s Hospital de la Santa Creu, founded in 1401 by merging six medieval charitable hospitals. For centuries the institution treated the sick in a Gothic complex in the old city. By the nineteenth century, industrial growth had multiplied Barcelona’s population, while new medical ideas demanded more light, ventilation, hygiene, and specialized space. The medieval hospital could no longer meet those needs, creating pressure for a modern campus beyond the crowded center.

Banker Pau Gil provided the decisive funding through a bequest intended for a new hospital dedicated to Saint Paul. The project was entrusted to Catalan architect Lluís Domènech i Montaner, who began work in 1902. He conceived not one massive block but a garden city of specialized pavilions. Patients would receive air and sunlight among landscaped grounds, while underground tunnels carried supplies and connected services without crowding the paths above.

Domènech united medical planning with Catalan Modernisme. Brick structures, colorful ceramic tile, mosaics, sculpture, wrought iron, and abundant natural imagery made the hospital both functional and symbolic. The administration pavilion formed a ceremonial entrance, while individual wards were designed for different medical needs. Artists and workshops contributed decorative programs celebrating charity, faith, civic history, and healing. After Domènech’s death, his son Pere Domènech i Roura continued the work, and the complex opened in stages before its formal completion in 1930.

Sant Pau served as a working hospital through war, dictatorship, medical modernization, and the growth of public health care. Clinical demands brought alterations, partitions, equipment, and new buildings that sometimes obscured the original design. Even so, the pavilion system remained a landmark in hospital architecture. In 1997 UNESCO inscribed the complex with Domènech’s Palau de la Música Catalana, recognizing both as outstanding works of Catalan Modernisme.

Hospital functions moved to a new facility in 2009, making possible a major restoration of the historic pavilions, roofs, ceramics, stained glass, and gardens. Conservators removed later additions where appropriate while retaining evidence of decades of medical use. The underground service tunnels survive as a crucial part of the original system. The reopened complex now houses cultural, research, and international organizations while interpretation preserves its medical history. Sant Pau is significant because beauty was not applied after the practical work was solved. Architecture, landscape, decoration, sanitation, circulation, and patient welfare formed one integrated plan, expressing the early twentieth-century belief that a carefully designed environment could contribute to healing and civic dignity.