Trousseau Square was built near the Bastille, on the ruins of the hospice des Enfants-Trouvés. A music kiosk adorns the square, and a garage sale is held every year (late September-early October).
Opening times and prices
More info on opening times:
9am or 9:30am - 5:45pm, 7pm, 7:30pm, 8:30pm and 9:30pm.