B
已访问地点：1039
联合国会员国：2 / 193 (1%)
联合国+（国家和地区）：2 / 256 (1%)
最北端：Niagara Falls 
(43° 6′ N, 79° 3′ W)
(43° 6′ N, 79° 3′ W)最西端：San Diego International Airport (32° 44′ N, 117° 11′ W)
(32° 44′ N, 117° 11′ W)最东端：Providence (41° 49′ N, 71° 24′ W)
(41° 49′ N, 71° 24′ W)最南端：Saint Pete Beach (27° 43′ N, 82° 44′ W)
(27° 43′ N, 82° 44′ W)加入时间：去年