This is a spinning bike room with a capacity of 25 people. Breaking through the limitation of narrow space, we use symmetrical circular mirrors to create infinite visual effects that extends the space by the reflection and makes the confined space unlimited. This project is activated based on an expression of space aesthetics and the creation of visual and auditory interaction. The corresponding spot from the neon lights along with the circular mirrors enhances the spatial illusion for extending the vision again. With all stimulation, users can enjoy various sensory experiences while cycling.