At the extension of the axis of Fifth Street, pier-museum becomes the ending of the urban space above the sea. The typology of building expresses the conversion and interaction between two types of spatial energy-urban space formed by streets fabric and the wide Sea. Simulating the natural growth, along the view toward the seascape in distance, the structure stretch from the beach end to the sea, converts the city space with vectorization to a floating seascape terrace, planar pier evolutes to an organic structure, and provides the free promenade path toward the sea.