Both desert and rainforest can be found in one place in the German city of Erfurt. HÖRMANN BauPlan GmbH handled planning and implementation of the building services equipment for the unique new climate-controlled conservatory. Two exhibition halls were built (a desert house and a rainforest house), plus a dining area and event space as well as toilets and technical facilities. The challenge during planning was to integrate these areas in the building architecture in a way that would ensure that visitors would scarcely notice them. At the same time, it was necessary to meet extremely exacting structural and technical standards in terms of extreme climates, fire safety and a reliable energy supply to protect the exotic inhabitants.