The Institute for Quality of Life recently issued its latest Happy City Index, which breaks down the happiest cities in the world into three tiers – Gold, Silver, and Bronze. Only one US city made the list of the 250 happiest cities around the world. However, the real takeaway isn’t who fell short but what the “Gold” rated cities have in common. For starters, most are located in Europe – but it’s how the cities are designed and how they operate rather than their location that makes them ideal places to live and visit. These factors tie together the happiest cities in the world.