Mill Ends Park is the world's smallest city park (according to the Guinness Book of World Records in 1976). The park is just two feet wide, and sits in the middle of Naito Parkway. It is the only colony for leprechauns west of Ireland.
Renovations over the years have included a swimming pool and diving board for butterflies, and a miniature Ferris Wheel (delivered by full sized crane).
I ♥ Portland, Oregon!