Historical collective memory of grahadi to preserving inclusive cultural heritage for sustainable cities SDGs 11

Surabaya is a trading city that has existed since the Nusantara era and is currently the center of economic cycle in East Java. Of course, Surabaya is the capital of the province of East Java has also changed its face from time to time. Not only changes in social structure caused by urbanization, the regional order also gets a touch of development. In contrast to other cities that grew due to the specialization of activities, Surabaya grew from residential points which then encouraged the development of the city. These settlement points are inhabited by different ethnicities, so the styles of buildings and architectures that are built are different. The buildings carry the history and collective memory of each that shows the identity and journey of the city. The Grahadi Building (The official residence of the governor of East Java) as one of the historical remains did not escape it. This study aims to look at Grahadi from time to time and explain the symbolic, historical, and collective memory functions that exist with historical perspective. This research also can support SDG’s number 11 to make cities and human settlements inclusive, safe, resilient and sustainable, especially strengthen efforts to protect and safeguard the world’s cultural and natural heritage as well as SDG 15 (Life on Land) by contributing to the conservation and sustainable management of natural ecosystems.