Solid. Harsh. Unassuming. At least that's what Casa Zicatela is giving on the outside. But beyond its concrete barrier is an intricate network of stone staircases and open-air spaces. Located near the beach in Oaxaca, Mexico, the monolithic structure is made entirely from board-form concrete. Massive steps lead you down to a mini oasis with grassy courtyards woven around pools of water. Rooms are arranged around the central terrace where exposed concrete dominates the palette. Interiors are accessed by folding wooden screens, adding warmth to the otherwise coarse facade. When open, they flood the spaces with natural light while offering views of the coastal sky.