Square Henri-Galli, Urban park in 4th arrondissement, France

Square Henri-Galli is a triangular garden of 2,000 m² at the corner of Boulevard Henri-IV and Quai Henri-IV, facing the Seine and Île Saint-Louis. In that corner stand the light-grey stone blocks of a Bastille tower base, a rounded lower wall with a flat ledge and a broken, stepped upper tier, topped by a low wire fence. A lawn with benches and a small playground lies beside it.

The square was created in 1925 using stones from a tower of the former Bastille prison that were uncovered during metro construction. These recovered stones were reconstructed into a visible feature within the space.

The square is named after Henri Galli (1853–1922), a Parisian journalist and politician of the Third Republic. No plaque or monument to him stands in the square; the name itself, given in 1925, is the tribute. Visitors walking the gravel paths see the Bastille tower base and the playground rather than any memorial marker.

The space is open daily throughout the year and offers flat pathways, seating areas, and a children's play zone near Sully-Morland Metro station. Its central location makes it easy to visit while exploring the neighborhood.

The stonework in the corner between Boulevard Henri-IV and Quai Henri-IV is the base of the Bastille's Tour de la Liberté, one of the fortress's eight towers. It was dug up in 1899 at 1, rue Saint-Antoine during work on metro line 1, then taken apart and rebuilt here. The upper blocks end in a broken, stepped line.