The Tsushima Museum, completed in 2019, represents a contemporary approach to regional cultural institutions in Nagasaki Prefecture. Designed collaboratively by Kei Kii and Total Media Development Institute alongside Shuji Nose and Ko Ohashi of Ishimoto Architects, the building serves as a vital repository for the island's rich historical and cultural heritage. Situated in Izuhara, the museum's architecture thoughtfully integrates local context while employing modern design principles. The facility functions as both a museum and memorial hall, showcasing artifacts and narratives that illuminate Tsushima's significant historical role in East Asian cultural exchange. Its design demonstrates sensitive consideration of how contemporary museum architecture can honor and preserve regional identity while serving contemporary cultural needs.