Troms? Arctic-Alpine Botanical Garden is the northernmost public garden in the world. It sits in the northern reaches of Norway just outside of the Arctic circle on the island of Troms?. Open to the public for free and year-round, the grounds are often covered in snow, but in blooming months you can enjoy species that are unique to the polar region such as the Tibetan poppy, Rhododendrons, and the Siberian Fawn Lily.