Ключевые слова: architecture, audience, auditorium, blue, building, business, cement, center, chair, conference, congress, convention, corporate, culture, design, discussion, education, empty, event, finance, group, hall, indoor, inside, interior, light, management, meeting, modern, new, nobody, palace, perspective, presentation, professional, public, room, row, screen, seat, seating, seminar, show, stage, training, visual, work,