People visit San Francisco for a life-changing experience. But chances are, The City has changed their lives long before they arrived. Think about it, the way the world buys and listens to music, how we use our cellphones, what we wear (especially on casual Fridays), even the kind of food we eat- all have been changed by ideas that got their start here. While many are inspired to travel here to witness our amazing natural landscape and icons, what’s really inspiring are the ideas that travel from here to the rest of the globe. San Francisco- Where the World Changes.