Kiritimati or Christmas Island is a Pacific Ocean atoll in the northern Line Islands and part of the Republic of Kiribati. The island has the greatest land area of any coral atoll in the world: about 322 square kilometres (124 sq mi); its lagoon is about the same size. The atoll is about 150 km (93 mi) in perimeter, while the lagoon shoreline extends for over 48 km (30 mi). Christmas Island comprises over 70% of the total land area of Kiribati, a nation encompassing 33 Pacific atolls and islands.
Between 1957 and 1958 some nuclear test, called ''Megaton Trials'' took place in this Pacific atoll, now part of Kiribati. Unfortunate case for the local population, but a greedy opportunity for collectors, since a can was dedicated to the event by Watney's. Extremely rare can, only one item known.
World'' has enjoyed indipendence for very short periods of time. Since 1950 it's an autonomous province of China.