| Caused by the collision of solar-wind particles with molecules
in the earth's atmosphere, the northern lights are a riot of psychedelic colour. Viewed through the roof of a glass igloo, such as those in the village of Kakslauttanen, 300km north
of the Arctic Circle in Finland,
the sight is stranger and more memorable still. Discover the World (01737 214255; www.discover-the-world.co.uk) offers three-day packages with log-cabin accommodation from £672 per person, including flights. You can upgrade to an ice igloo for £15 per person, and to a glass one for £39.
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