The Botanic Garden on the High Street is the oldest botanic garden in the UK. It contains over 8,000 different plant species on . It is one of the most diverse yet compact major collections of plants in the world and includes representatives of over 90% of the higher plant families. The Harcourt Arboretum is a site six miles (10 km) south of the city that includes native woodland and of meadow. The Wytham Woods are owned by the university and used for research in zoology and climate change.