
In a lush greenhouse high in the Alps, butterflies of various species and colors flutter freely while butterfly pupae are suspended in a structure as they grow into adult insects.
This is the Butterfly Forest in the tropical mountain greenhouse in Trento, Italy, a project by the Museo delle Scienze (MUSE), an Italian science museum. It's modeled on Udzungwa Mountains, a mountain range and rainforest area in south-central Tanzania that’s one of the world’s biodiversity hotspots. The Butterfly Forest features plant species endemic to the region, as well as birds, reptiles, amphibians, fish and invertebrates from different parts of the world, all inside 600 square meters (about 6,400 square feet) of forest with cliffs, inclinations and a waterfall.