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Notre-Dame de Paris stands on the eastern end of the Île de la Cité in the heart of Paris. Bishop Maurice de Sully began the present cathedral around 1163; the choir was consecrated in 1182 and the nave completed by the mid-13th century. Early Gothic innovations — rib vaults, pointed arches, flying buttresses — allowed taller walls pierced by enormous windows including north and south rose windows (13th century).
The west façade's twin towers and Gallery of Kings became symbols of Paris. Victor Hugo's 1831 novel revived public affection when the building faced demolition; Eugène Viollet-le-Duc's 19th-century restoration added the spire later lost in the fire of 15 April 2019. Flames destroyed the oak frame (the "forest") and collapsed the spire; stone vaults largely held. A international restoration aims to reopen the cathedral for worship and tourism.
"Great buildings, like great mountains, are the work of centuries… Time is the architect, the people are the mason."
— Victor Hugo, Notre-Dame de Paris (1831), on the cathedral as living monument
The crypt preserves Gallo-Roman and medieval archaeological layers beneath the square. UNESCO lists Notre-Dame as part of the Banks of the Seine (1991). Pair with Chartres Cathedral and Mont-Saint-Michel on a French Gothic itinerary.