Thanks to Phi for a challenging but enjoyable puzzle:-)
Before I file it away, can I get some clarity on the wordplay in these ...
Himalayan region: Karakoram mountain recalled in quick glance
I can see the "quick glance" but that leaves KI/IK for "Karakoram mountain" - I did think it might be K2 so KK but one of these K's is needed for the "quick glance" ?
Memorable witch’s familiar, perhaps frightening, but not evil
I think the first 3 letters are "witch's familiar" but can't get the final 3 letters from the rest - I've tried adding "evil" to them to see if a word for "frightening" might appear, but no.
He will avoid infatuations, making amorous advance
This is another where I thought we might have to add something to the answer, maybe "he" or "he will" to get "infatuations" but I can't see it.
Spanish city, singular, offering new location for Spain
Other than the answer is a "Spanish city", I have no idea of the wordplay here.