New Jersey technically owns the Statue of Liberty Gift Shop.
To settle the dispute of where the border between NI and NY was, some islands on New Jersey’s side were given to New York. When one of the islands was artificially expanded, a ruling was made that any new territory from when the islands were discovered would be part of New Jersey. The Gift Shop on Liberty Island actually lies on created land, so legally NJ owns that, it just hasn’t been noticed yet.