The Sustainability Concept of Alun-alun as a Model of Urban Design in the Future

Dutch researcher has discovered the ruins of the open space as the center the cosmic city in Majapahit kingdom (century 13). The development of cities in Java were still using the concept as reference until Soekarno's era (the first president). He used the concept to create a new square as for substitute the loss of the old square in the Semarang city. Symptoms may inadvertently reference as the concept of sustainability in the downtown city expansion and development of the new city center in the future. It is possible to make cooperation with Japan and Thailand that have a similar root of historic.