Yoga capital USA

Hey guys, as I would like to go to USA for some time, i wonder if there is a place or city there that is considered "most yogic", maybe with many yogaschools, certain individuals who teach or just an peaceful magic atmosphere.
The Question is: What is the Rishikesh of the USA?
And furthermore I really like Acroyoga and I´d love to find an advanced community to practice with in some parks under the southern Sun!
Thanks for your help!