Why was Easter Island added to the UNESCO World Heritage List in 1995?

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Easter Island was added to the UNESCO World Heritage List in 1995 because it serves as the site of a unique pre-European civilization.1

The island is recognized for its extraordinary cultural legacy, most notably the creation of more than 600 gigantic stone statues known as moai and the construction of massive stone platforms called ahu. Archaeological evidence confirms that the island's early inhabitants possessed highly specialized megalithic masonry techniques and developed distinct architectural concepts that have no direct counterparts elsewhere in Polynesia. These monuments, along with the ceremonial center at Orongo, provide significant historical evidence of a complex society that evolved in extreme isolation.21