The Grand Gallery of Evolution was designed by Jules André, whose other works in Paris included, in collaboration with Henri Labrouste. the Beaux-arts Bibliotheque National. He became architect of the museum in 1867, and his works are found throughout the Jardin des Plantes. It opened during the Paris Universal Exposition of 1889, though it was not finished as intended; it still lacks a grand facade on the side of rue Geoffroy-Saint-Hilaire. The main facade, facing the two principal alleys of the formal garden, is flanked by two lantern towers. A series of medallions between the bays on the main facade overlooking the garden honors ten of the notable scientists who have worked in the Museum along with an allegorical statue of a woman holding an open book of knowledge.