Located in Nagasaki Prefecture, Dejima 出島 or Deshima, was an artificial island off Nagasaki, Japan, that served as a trading post for the Portuguese (1570–1639) and subsequently the Dutch (1641–1858). For 220 years, it was the central conduit for foreign trade and cultural exchange with Japan during the isolationist Edo period (1600–1869), and the only Japanese territory open to Westerners.

Dejima played a vital role in Japan's connection to Europe at the time and in Japanese history. Although not an island anymore, significant efforts have been made to preserve the area's historic architecture. Those efforts have resulted in the restoration and reconstruction project of the former trading island

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