De Montel: Terme Milano is a transformative spa project by THDP, restoring Milan’s historic 1920s Scuderie into the city’s largest urban thermal complex. Merging Art Nouveau elegance with sustainable innovation, the design honors the site’s equestrian past while showcasing Milan’s only certified thermal waters. Spanning 16,000 sqm, the interiors blend bespoke craftsmanship, tactile materials, and immersive sensory elements inspired by water, nature, and heritage. Every detail—from custom lighting to spa layouts—creates a refined wellness experience. This unique restoration sets a new benchmark for heritage-led design, fusing tradition, well-being, and environmental responsibility in an urban sanctuary.