Philadelphia has hit a high note with the recent opening of THE KIMMEL CENTER FOR THE PERFORMING ARTS, an elegant cultural complex that will serve as home to eight different arts groups, including The Philadelphia Orchestra. The Kimmel, which occupies an entire downtown block, is designed as a vast indoor plaza, with two main performance halls encased under a shimmering glass roof. To top it off, there’s a year-round rooftop garden complete with views of the city. (215) 790-5800,