Coordinates: 48°51′10.70″N 2°20′10.70″E / 48.8529722°N 2.3363056°E
The Boulevard Saint-Germain (French pronunciation: [bulvaʁ sɛ̃ ʒɛʁmɛ̃]) is a major street in Paris on the Left Bank of the River Seine. It curves in a 3½ kilometre arc from the Pont de Sully in the east (the bridge at the edge of the Île Saint-Louis) to the Pont de la Concorde (the bridge to the Place de la Concorde) in the west and traverses the 5th, 6th and 7th arrondissements. At its midpoint, the Boulevard Saint-Germain is traversed by the north-south Boulevard Saint-Michel. The boulevard is most famous for crossing the Saint-Germain-des-Prés quarter from which it derives its name.
The Boulevard Saint-Germain was the most important part of Haussmann's renovation of Paris (1850s and '60s) on the Left Bank. The Boulevard replaced numerous small streets which approximated its path, including, from west to east (to the current Boulevard Saint-Michel), the rue Saint-Dominique, rue Taranne, rue Sainte-Marguerite, rue des Boucheries and rue des Cordeliers. One landmark removed to make way for the project was the prison of the Abbey of Saint-Germain-des-Prés which stood entirely on what is now the Boulevard, just west of what is now the Passage de la Petite Boucherie.