An atrium, in modern architecture, is a large open-air or skylit space located centrally within a building, often found at entrance lobbies, staircases, or connecting areas, designed based on the building's function. We all started somewhere! Let us guide you through getting set up on Âtrium. Atrium Design Studio the Leading Interior Designers in Kerala, who transform spaces with creativity and elegance. Bring your vision to life with personalized design solutions for every area Atrium was an open space in the middle of a Roman house, especially in the houses of the rich. This space was the central part of the house where people spent time together, communicated and completed numerous tasks.