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Hawaii
The U.S. state of Hawaii, and by far the most popular overseas vacation destination for Japanese travelers.
ハワイ has been the classic dream vacation for Japanese travelers since the 1970s: warm weather, beaches, and no language barrier at major tourist spots, thanks to a large resident Japanese-American community and decades of Japanese tourism.
Common collocations
Cultural note: ハワイ is so strongly associated with vacation and leisure in Japan that 南国気分 ("tropical-island mood") and ハワイアン料理 (Hawaiian-style food) are recognizable marketing terms nationwide, even far from any beach.