The John Rylands Library, Manchester

The Historic Reading Room: perched 30 feet above street level, and presided over at either end by striking marble statues of John and Enriqueta Rylands, the famous Historic Reading Room is the Library's centrepiece and one of the finest of any library in the world. This fantastic neo-Gothic space has a soaring, cathedral-like feel, with small alcoves nestled on each side for personal study that would make Harry Potter feel at home. (From the visitor guide)

The Library was opened to the public on 1st January 1900. It has a superb architecture - both inside and outside. 

I was in Manchester for a meeting and there was just enough time to visit this Library before my return train journey. The day started very grey and misty but the sun has been shining at its best since about 9 am.