In the early 1900s, Nagasaki emerged as a significant shipbuilding hub. This industry ultimately made it the target for the second atomic bomb the United States dropped on Japan during World War II. On Kyushu Island's western coast, Nagasaki is celebrated for its volcanic landscapes, stunning offshore isles, architectural heritage, and therapeutic hot springs. Historically, it served as Japan's sole significant port open to foreign nations during its era of national seclusion.