During the summer months, the Botanic Gardens and the Utrecht Science Park form the backdrop for the Tropical Butterfly Festival. The gardens surrounding the 19th-century Fort Hoofddijk are in full bloom, and the butterflies make their appearance from 1 June. In a special greenhouse, visitors can enjoy viewing the most magnificent butterflies from all over the world, including Central and South America, Asia, Africa and Australia.
The greenhouse butterflies are transported from elsewhere as pupae or cocoons, obtained from worldwide ‘butterfly farms’. Every species of butterfly has its own special pupa/cocoon – some are metallic gold, others a dull brown, but all of these ‘hidden beauties’ have their own unique look. The greenhouse contains information cards on all the butterflies.