A lot of them have had facelifts recently and facilities are improving. They are not the dusty old places we knew where stern librarians were shushing everybody. Children nowadays are not only welcome but encouraged to come. Our local library even has a Little Tikes slide and climbing box which keeps the place happy and helps mum choose books in relative peace. I have attended some excellent performances by entertainers and story times are particularly good.
Libraries also offer activities for children.
Libraries hold a file of leaflets from nurseries, activity groups and the like in your area. Ask the librarian to look at it. Children sit down round the reader and sometimes there is some play time as well. You can of course borrow books for free at your library. You can also borrow tapes for free and videos for a small charge.