Easter Island had statues of the Eleventh Doctor after he and River Song visited. (TV: The Impossible Astronaut)
The Fourth Doctor and Leela went to 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)
Other references[]
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)