The Orangery is the newest building in the Royal Garden. It was built in the place of the original greenhouse upon an impulse from Mrs. Olga Havlová, the wife of former President Václav Havel. The project of the modern Orangery from architect Eva Jiřičná from 1999, however, refers to a tradition dating back to the era of Rudolph II, who grew lime trees in the same locality. The visitors can, after all, still admire the lime trees, including other thermophilic plants. The cylindrical construction of the Orangery is made of a combination of stainless steel and glass and the entire building is approx. 90 m long.