Forget swaying palms ; these trees offer real shade . The islands of Tristan da Cunha are 1,750 km off South Africa . It 's surrounded by dangerous reefs , but North Sentinel is intimidating because of its inhabitants . Bear Island is the southernmost island in the Arctic archipelago of Greenland .
Forget swaying palms ; these trees offer real shade . The islands of Tristan da Cunha are 1,750 km off South Africa . Bear Island is the southernmost island in the Arctic archipelago of Greenland .