M
已访问地点：37
联合国会员国：9 / 193 (5%)
联合国+（国家和地区）：9 / 256 (4%)
最北端：Warsaw 
(52° 13′ N, 21° 0′ E)
(52° 13′ N, 21° 0′ E)最西端：Las Vegas 
(36° 10′ N, 115° 8′ W)
(36° 10′ N, 115° 8′ W)最东端：Warsaw (52° 13′ N, 21° 0′ E)
(52° 13′ N, 21° 0′ E)最南端：Key West (24° 33′ N, 81° 46′ W)
(24° 33′ N, 81° 46′ W)加入时间：去年