Conde Nast Traveler unveils friendliest and unfriendliest cities list . Charleston , South Carolina . American cities dominate least - visited list . Americans are most popular in Brazil 's island city of Florianopolis . Detroit is ` ` armpit of the world ''
Conde Nast Traveler unveils friendliest and unfriendliest cities list . American cities dominate least - visited list . Americans are most popular in Brazil 's island city of Florianopolis . Detroit is ` ` armpit of the world ''