What makes a place cool?

Ever wonder why certain places have a vibe that other places don't have? Why are some urban areas are not happening and some are. 
If your into creative culture, cafe culture, art, downtown living, the art scene, cutting edge technology, work for yourself or always wanted to, you should check out this site. Its call CoolTown Studios. 

Richard Florida coined the name "creative class". He said "I define the core of the Creative Class to include people in science and engineering, architecture and design, education, arts, music and entertainment, whose economic function is to create new ideas, new technology and/or new creative content."

Below is his book from Amazon.