From the Chetham's Library website:
Chetham's Library was founded in 1653 and is the oldest public library in the English-speaking world. It is an independent charity and remains open to readers and visitors free of charge. [...] The Library began acquiring books in August 1655, and has been adding to its collections ever since. As well as a fine collection of early printed books, the collections include a wealth of ephemera, manuscript diaries, letters and deeds, prints, paintings and glass lantern-slides.
The library established in 1653 under the will of Humphrey Chetham, as part of Chetam's Hospital. It has been in continuous use since 1653 and operates as an independent charity, open to readers and visitors free of charge. It holds more than 100,000 volumes of printed books, of which 60,000 were published before 1851.
If you're lucky enough to live in Manchester or the vicinity stop by the library and tell me whether it really is like a corner of Hogwarts, and the rest of us will have to be satisfied with their official and Facebook pages.