Possible Clues:

• Polar bear's domain
• Pole position?
• Northern region
• (Of weather) very cold
• The circle that starts with a bit of a circle
• Architect hasn't got the position of the pole
• Kind of turn, so to speak, in a circle, so to speak
• A little mollusc: it crawls backwards when very cold
• North Pole region
• A bit round this circle to start to be cold