The company Emu Analytics used LIDAR data to create 3D building data for across the UK.
These are not all made available as open data but a select number of cities have been made available.
One of these was Plymouth.
Plymouth release open data on the locations of libraries (and opening hours, and services offered), available at Plymouth Open data.
Taking the 3D building data, the Plymouth Library Finder project is designed to highlight the library building rather than put points on a map. And use the opening hours and services to provide some interactive functionality.