Most of the ones that are "uninhabited" here: https://en.m.wikipedia.org/wiki/Territories_of_the_United_States https://en.m.wikipedia.org/wiki/Territories_of_th

Most of the ones that are "uninhabited" here: https://en.m.wikipedia.org/wiki/Territories_of_the_United_States https://en.m.wikipedia.org/wiki/Territories_of_the_United_St... Some of them have very good reasons, for example at least one was a nuclear test site. One of them is visitable, but you basically have to sail a private boat (I wonder if a rental is fine) from Hawaii to reach it and iirc need to get permission ahead.