The 15th arrondissement of Paris is one of the 20 arrondissements of the capital city of France. In spoken French, it is referred to as le quinzième. The 15th arrondissement, called Vaugirard, is situated on the left bank of the River Seine. Sharing the Montparnasse district with the 6th and 14th arrondissements, it is the city's most populous arrondissement, with …The 15th arrondissement of Paris is one of the 20 arrondissements of the capital city of France. In spoken French, it is referred to as le quinzième. The 15th arrondissement, called Vaugirard, is situated on the left bank of the River Seine. Sharing the Montparnasse district with the 6th and 14th arrondissements, it is the city's most populous arrondissement, with a population of 229,472 as of 2020. Tour Montparnasse – the tallest skyscraper in Paris – and the neighbouring Gare Montparnasse are both located in the 15th arrondissement, at its border with the 14th.