people who dream of witnessing this spectacle, it remains the only guidebook to provide detailed treatment of optimum locations across North America (Canada, Alaska), Greenland and Europe (Sweden, Norway, Finland and Iceland) while also covering practicalities, with this edition providing greater detail on a wider range of accommodation options, from budget hotels to Sweden's spectacular ICEHOTEL, built each year from river water before melting in spring. The northern lights - arguably the greatest light show you'll ever see - are a major, increasingly popular tourist draw of the Arctic and sub-Arctic winter. The experience is also increasingly popular: in the decade to 2016, winter tourism to northern Norway increased by 378%. As well as advice on the best places to see auroras, this guide offers a succinct, easy-to-understand explanation of the science behind the northern lights, and provides information on tour operators offering northern lights packages, up-to-date guidance on photographing the aurora in the light of technological improvements, alongside practical tips including what to wear, how to drive in winter conditions and how to understand northern lights forecasting. The guide is further enriched by suggestions for complementary daytime activities such as dog sledging, skiing, snowshoeing, snowmobiling and wildlife safaris; an examination of the reactions of the early explorers to their first sightings of this phenomenon; and insights into the myths and legends of the northern indigenous peoples.