Question:
What happens when I enter museums,shops and other indoor places... do I need to take the jacket off? Will I need warm gloves and socks? If it's sunny but cold, would I still need sunblock?
Answer:
Places wont be heated if its 20C outside, most Europeans will be
wearing just a shirt and trousers, if you keep your jacket on,
you will just look smarter than everyone else :-)
Sunblock is needed irrespective of temperature, although the sun
is weaker because its not as high in the sky and there will often
be some cloud.