A Subway ride
Take the aérien line 6 of the Paris Metro! You will cross the famous bridge of Bir-Hakeim and its fabulous panorama of the Eiffel Tower! You will then see the Invalides, pass by Denfert Rochereau and its Catacombs, and arrive to Bercy and its small village. For the price of a metro ticket, enjoy a visit (sometimes music!) In the heart of this mythical line and just recently renovated.