Cathédrale Notre-Dame de Papeete

Built starting in 1856 under Tahiti's first Catholic bishop, Étienne Jaussen, this cathedral dedicated to the Immaculate Conception sits right in the center of Papeete and is one of French Polynesia's most significant historical landmarks. It carries a quiet gravity that sets it apart from the busy town around it — a rare slice of 19th-century Catholic heritage in the middle of the Pacific. Worth a look even if churches aren't usually your thing.