If there’s one place more beautiful in winter than summer it’s the Arctic Circle, when the landscape is illuminated by spectral, low-lying sunlight for about eight hours a day. It’s also at this time of year that the aurora borealis appears. The specialist to tap for this spectacular light show is Entrée Canada, which combines the Northern Lights (first picture) with dog sledding through Canada’s Yukon territory (www.entreedestinations.com; six nights from C$3,240, about £1,840, per person, excluding flights). Entrée Canada also holds the keys to some of the finest private homes in Whistler, including a new, super-contemporary heli-in, heli-out chalet that sleeps 14 (from about £40,000 per week). An alternative is Gothics Lodge – a cosy, recently renovated heli-skiing property available room by room. It’s owned by Canadian Mountain Holidays (www.canadianmountainholidays.com), which claims to have invented heli-skiing (second picture) in the 1960s. Gothics, which has sleek, wood-and-stone interiors by Portland’s Skylab Architecture, provides access to British Colombia’s Monashees and Northern Selkirks (about £7,350 per person for a four-day trip based on double occupancy, including meals, transfers to and from Calgary Airport and twice-daily heli-skiing).