Right in the middle of downtown, at the end of Hope Street, is one of the most vibrant public libraries in the country. There are gorgeous old murals and a modern new wing with three enormous and fanciful chandeliers. And there are nice, comfortable chairs where you can sit and read, or work, or use the public wi-fi. Or just watch the people. They also have frequent lectures. Recent budget cuts mean that it is not open on Sunday right now, but you can still sit in the garden and enjoy the view.