With a 1 900 m² surface, the Big Greenhouse of the Lyon Botanical Garden is the highest in France and one of the highest in Europe: its roof is 21 meters high. It is a unique complex with about 1 200 tropical plants sown in the open ground, organised by themes (ferns, arid lands plants, Monocotyledons…) or by continents. More than 100 useful plants are presented there. The Big Greenhouse is divided in 3 parts: in the middle: the Big Dome, South facing: the hot greenhouse and North facing: the Camellias greenhouse.