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Longwood's Conservatory is one of the world's great greenhouse structures.

It shelters 20 indoor gardens and 5,500 types of plants. The Conservatory was built in 1919 to be a perpetual Eden by Pierre S. du Pont and has since been periodically expanded and renovated. At present, the Conservatory spans 195,668 square feet—or 4.5 acres—of some of the world’s most picturesque gardens and state-of-the -art facilities.

Rooms in the Conservatory include the BallroomPatio of Oranges, Fern Floor and Alcoves, and many other beautiful gardens including the Waterlily Display, Orangery, Silver Garden, and Orchid House.