Interior Space and Exhibition Design Janus Bar by 0103 Interior Design Janus is a whisky and cocktail bar located in Changsha, China. The interior covers about 200 square meters and is arranged over two floors. The facade is formed by simple black geometric blocks with classical details, and a cantilever platform holds a classical sculpture. The first floor is a supporting space, while the second floor is the main venue and receives daylight through a roof opening. The staircase uses loose wood treads that give a soft sound and slight rebound underfoot. Wood veneer with vertical grain and mirrored stainless steel shape the atmosphere.