PHOTOGRAPHS: FREDRIK BROMAN/DISCOVER THE WORLD, FRIĐPJÓFUR M/GETTY IMAGES, PHILIP LEE HARVEY, MARK JUNAK, MATT MUNRO
Discover the World has a host of unique adventures on offer; the Luleå Winter Adventure includes a night at the Aurora Safari Camp deep in the forests of Swedish Lapland (above; from £1,289; discover-the-world.co.uk).