Washington Park International Rose Test Garden, Portland

Portland is called the "Rose City" for a reason: these public gardens, established in 1917 are set above the cityscape of downtown Portland. They are the oldest official public rose gardens in the United States, and the only place in North America that can issue officially-recognized awards for hybrid roses grown around the world. The best time of the year for viewing is during the June Rose Festival. Fragrant blooms begin to appear in May and continue until frost. This attraction is free and open to the public.