International Rose Test Garden
Though a rose garden isn't technically a botanical garden, PORTLAND DOESN'T NEED TO PLAY BY YOUR RULES, MAN! It's also the Rose City, so logic would dictate it would be home to a place designated to test new varieties of roses, including one of only six gardens to test miniature roses. The place has more quirks: its individual rose plots have names like Neil Diamond, Prima Donna, and Baby Boomer, and the Shakespeare Garden was originally intended to only include plant life mentioned in the Bard's plays. The whole things sits on only 4.5 terraced acres, most of which have sweeping views of Downtown Portland, the Willamette River, and -- on clear days -- Mount Hood.