1 Best Sight in The Veneto and Friuli–Venezia Giulia, Italy

The Venetian Republic ordered the creation of Padua's botanical garden in 1545 to supply the university with medicinal plants, and it retains its original layout. You can stroll the arboretum—still part of the university—and wander through hothouses and beds of plants that were introduced to Italy in this late-Renaissance garden. A St. Peter's palm, planted in 1585, inspired Goethe to write his 1790 essay, "The Metamorphosis of Plants."