It’s a commonplace complaint among Austinites that their city lacks many of the amenities of a world-class metropolis, such as a full-time symphony orchestra, a major natural history museum, and a zoo that people would travel to visit. This fall, though, the Capital City takes one giant municipal step forward. On October 28 the new Central Library will open on Cesar Chavez Boulevard, overlooking Lady Bird Lake. It is, perhaps, the most significant public building to open in Austin in decades, a state-of-the-art facility complete with a rooftop butterfly garden, a “technology petting zoo,” and an astonishing amount of sunlight (it is, reportedly, the best “day-lighted” library in the world). Here’s an advance look at some of what else you’ll find inside and outside.