Cornwall Park is a haven a tranquillity in right in the heart of Auckland. The park features fine specimen trees, beautiful garden beds, panoramic summit views, grazing sheep and cattle, free summer and winter events, guided walks, free gas/wood barbecues.
The park is well used even on a week day, parking at the weekend is a little tricky especially around lunch time. Like many of the regional parks there are sheep and cattle in the park and they are very friendly - despite appearances ( see photo below with car) the cattle are separated from the people.
There is a brief description here Wikipedia
Natives, don't quote me but I think these are Kahikatea
Mature olives trees
Very tame cattle