On the grounds of the University of Tromsø, the world's northernmost botanic garden is one of the most unique we've ever encountered. Arctic tundra and alpine mountain botanicals converge here in a landscape where plants have a shortened growing season and very low temperatures. The season technically lasts from the end of May until mid-October, although the plants experience their real growth only when the Midnight Sun shines on them day and night. The setting is beautiful, with slopes, a stream, a pond, and terraces. Many of the plants are from the Arctic and Antarctic, as well as various alpine and Himalayan locations. You've seen better botanical gardens, we are certain, but not one growing rare specimens this far north.