Absolutely phenomenal place. We saw it from the concert hall opposite and there were people sitting out on what looked like a huge floating wave up on a roof. Looked awesome so visited to explore. We are not big fans of modern architecture but this is just totally awesome. Wonderful spaces, amazing areas for sitting and reading, beautiful big kiddy areas, great cafes and ... wow, having a coffee out in the sun on that vast, humungous balcony. Back indoors to marvel at the facilities - sewing machines and equipment to design clothes available to hire, machines for making plastic items, video and music studios to hire, video gaming studios ..... it's a library but not as we know it.
If you have an hour spare and want to see something off the tourist track, it's fab and it's free.