EAS (Estudio Álvarez-Sala) is an architectural firm based in Madrid led by Enrique Álvarez-Sala Walther, an architect with more than thirty years of professional experience. Over the years, the practice has established steady partnerships with several other well-known architects including: Ignacio Vicens Hualde, César Ruíz-Larrea Cangas and Carlos Rubio Carvajal.