What is the name of the UNESCO World Heritage site that covers most of Easter Island?

The UNESCO World Heritage site covering much of Easter Island is Rapa Nui National Park.

Rapa Nui is the Polynesian name for Easter Island, while Isla de Pascua is its Spanish name. The national park protects a large share of the island's archaeological landscape, including ceremonial platforms called ahu, quarry sites and the famous moai statues.

UNESCO inscribed Rapa Nui National Park as a World Heritage Site in 1996 under cultural criteria. Its importance comes from the achievements of the Rapa Nui people, who developed a distinctive Polynesian culture and carved hundreds of monumental stone figures between roughly 1200 and 1600 CE.

The park is not simply another name for Easter Island itself. Easter Island is the geographic island, administered by Chile; Rapa Nui National Park is the protected cultural and natural area within it. The site contains 887 known surviving moai, although many remain at or near the quarries where they were carved.