I visited this WHS in June 2014. Having visited quite a number of monasteries and abbeys in Europe before, I wasn't impressed by the huge complex of churches, chapels, gardens, monastery buildings, etc. especially since they seemed to be relatively new or heavily restored and my first impression was "this is just another abbey like many other on the list". However, I left the Abbey Library for last and what a pleasant surprise it was. I spent at least 2 hours gazing at the pristine library full of old parchment books, an original mummy and a sarcophagus from the Hatsheput Temple in Egypt and a replica of a gorgeous globe (the original is housed in a museum in Zurich). For 12 euros, I got the entrance ticket with the very informative audio guide, wore special footwear over my shoes to protect the wooden floor and for most of the time I had the magnificent place to myself. That said, the number of visitors at a time can be around 100, so it's best to avoid weekends, public holidays or peak hours. I could have spent more time just gazing at the wonderful library as the only downside was that of getting a stiff neck! The library alone to me has OUV and is a jem everyone should behold!