Botanic gardens began as monastic gardens in the 8th century and later evolved into physics gardens in the 16th century. The first botanic garden was established at Oxford University in 1621 when it received a large donation used to build walls and an entrance archway. The archway featured statues of Charles I and II and a bust of donor Henry Danvers. The garden was intended for academic and scientific study of medicinal plants. It employed Jacob Bobart as the first superintendent to cultivate over 1,600 plant species, establishing seed exchange with other gardens. Today the Oxford Botanic Garden continues to be an educational resource with eight greenhouse houses hosting plants from around the world.