The definition of an arboretum is a collection of trees in no particular order.
Egyptian Pharaohs planted exotic trees and cared for them; they brought ebony wood from the Sudan, and pine and cedar from Syria. Hatshepsut's expedition to Punt returned bearing thirty-one live frankincense trees, the roots of which were carefully kept in baskets for the duration of the voyage; this was the first recorded attempt to transplant foreign trees. It is reported that Hatshepsut had these trees planted in the courts of her Deir el Bahrimortuary temple complex (source wikpedia).
There are many famous arboretums in the world, all caring for natural and exotic trees brought from near and far. Washington Irving Park is one of these special places.
There are over 30 different varieties of trees (I dare you to name them all), and every year a new one is planted on Arbor day. If you want to really enjoy the beauty of nature, this park is the place to go. It is a canopy of trees, designed to make our world a more beautiful place.
If you have never been to an arboretum, please take the time to visit Washington Irving Memorial Park and Arboretum, and renew your love of nature once again.