Place outdoor sights in the brightest middle hours and use museums, meals, or hotel rest as warm intervals. Keep one evening flexible for changing conditions.
Dress in systems
Warmth comes from layers, dry socks, gloves that still allow you to use a phone, and footwear with grip. Test the full combination before a long outdoor day.
Protect the short daylight
Winter light is precious. Arrange tickets, transport, and breakfast so that the clearest outdoor hours are not spent in a queue.