What is an 'arboretum' ?

A friend told us about a great park with a fantastic playground called Tim Neville Arboretum. Who is Tim Neville and what is an 'arboretum'.  Still not sure who Tim Neville is but an 'arboretum' is a place where plants are cultivated for scientific purposes .... hmmm had we known that when we were there we would have insisted that the kids did not pick the plants at the garden ! 

Kids had a ball at this playground which had lots of a different play equipment and there was even a lochness monster appearing out of the grounds.   

There was also ducks to feed and a bit of a bike path for scooting. As soon as she got in the car on the way home, Abbey said she was tired and fell asleep instantly !