Planted in 1545 by Padua University’s medical faculty to study the medicinal properties of rare plants, Padua’s World Heritage–listed Orto Botanico served as a clandestine Resistance meeting headquarters in WWII. The oldest tree is nicknamed ‘Goethe’s palm’; planted in 1585, it was mentioned by the great German writer in his Voyage in Italy. A much more recent addition is the high-tech Garden of Biodiversity, five interconnected greenhouses that recreate different climate zones and explore botanical and environmental themes via multimedia displays.