Hoyt Arboretum was established in Washington Park to preserve evergreens for educational and recreational purposes. It was named in honor of Ralph Warren Hoyt, the county commissioner who championed the formation of the arboretum. It possesses the largest group of distinct species of any arboretum in the U.S. with 10,000 individual trees and shrubs, representing nearly 1,000 different species from around the world.

Arbor Lodge Park is a great little neighborhood park, loved by dog owners for its large off-leash area, and loved by everyone else for its tennis courts, baseball fields, and clusters of trees for shade or rain protection.

This park was donated to the city by the wife of George G. Gammons, a Portland lawyer in the early 1900's.