Oldest botanical garden (multi site)

The oldest botanic garden ever is the Botanical Garden of Pisa, Italy, founded in 1544. The garden relocated twice, and has been on its present site since 1591; the oldest botanical garden remaining on the same site is Orto Botanico in Padua, Italy, established in 1545. Oxford Botanic Garden, Oxford, was the first botanic garden in the UK, founded in 1621.