I have certain states of mind and certain things can click me into different states.
Songs and images do this especially often.
Sometimes I'll listen to a particular song and it will momentarily revert me back to the feeling of when I was at school.
Trains and stations are probably my favourite one. They make me feel elated sometimes
This is essentially "back when life was good" (even though I know my mind subconsciously blocks out the bad) moments, and I really treasure them. Though it's often incredibly wistful.
Anyway, Gondola is very good at inducing these feels sometimes, so that's why I like them.
Sorry for semi-offtopic.