1001 libraries to see before you die is only one site featuring wonderful libraries. You might also like to explore:
The centre for library design and innovation: a resource for library planning and design, a database of library buildings and a marketplace for services.
Model Programme for Public Libraries
An interactive, web-based inspiration catalogue and tools that are designed to communicate new knowledge, best practise and inspiration for brand new space/function interplay for library developers. The project is funded by the Danish Agency for Culture.
A European database presenting the best new library buildings in Europe commissioned by NAPLE (National Authorities on public Libraries in Europe)
Library Ranking Europe LRE
A site to share information about different local libraries in European countries, ranked on a scale that the authors (two retired Library Directors) have developed.
Please let us know of other useful sites.