The International Rose Test Garden in Portland, Oregon, is 100% free to the public, and stunning. It’s just shy of 100 years old (est. 1917) and is home to over 7,000 rose plants. It is literally where they test the color, fragrance, and other aspects of roses that are sent to them from all over the world. (Bonus: This is all smack-dab next to the Japanese Garden, so, if you appreciate pretty plants and landscaping, prepare to flip out.) Check out the rest of the rose photos here.