Easter Island

Easter Island was located in the Pacific Ocean.

The Fourth Doctor and Leela visited Easter Island in 1872. (PROSE: Eye of Heaven)

River Song said the Eleventh Doctor was worshipped there when they visited it. (TV: The Impossible Astronaut)

The Eleventh Doctor made note of this island to Clara Oswald while they were in the town of Christmas on Trenzalore, responding to her question 'how can a town be called Christmas?', he asked 'how can an island be called Easter?' (TV: The Time of the Doctor)

Behind the scenes

 * Though not clarified in The Time of the Doctor, Easter Island was named as such because it was discovered by European explorers on Easter Sunday.
 * Though not acknowledged by the Doctor, there also exists an, which was likewise named because it was discovered on Christmas Day.