Interior Space and Exhibition Design Youngor Store Showroom by Jeffrey Zee Youngor Fashion Concept Store is a retail interior design covering 5000 square meters. The original building is a half sphere with a glass facade. The interior was fully removed and an umbrella-shaped core tube was built at the center. Random perforations in the umbrella surface allow natural light to enter and create a soft light and shadow effect. The core tube holds an elevator and connects the floors. Wide steps at the entrance serve for product display and for sitting. Metal mesh, plaited bamboo and terrazzo were used.