Growing up in Milwaukee, I'd often see references to Gemütlichkeit. It's one of those great German words that is somehow both long and concise. Gemütlichkeit, according to Wikipedia, means "a situation that induces a cheerful mood, peace of mind, with connotation of belonging and social acceptance, coziness and unhurry."
The Danes have something similar, and they're quite proud of it: hygge. Like Gemütlichkeit, hygge is a sort of state of relaxed and cheerful peace found in the company of good friends and family. There's evidence of it everywhere in Copenhagen: picnics, open-air jazz concerts, families relaxing in a park, and friends sharing a beer or a long meal. Sometimes, it's as simple as joining your buddies and watching boats pass by.