Texas A&M University Campus Map
The Interactive Aggie Campus Map is one of the best University campus maps that I've seen that uses the Google Maps API.
The map uses shaded polygons to display the locations of individual buildings on the campus. Clicking on any of the shaded buildings will open an information window with information and a link to the building. The map is fully searchable and has options to display car parks, individual points of interest and restrooms.
The map also includes the option to view 360 degree panoramas of many of the buildings and a number of map tools. For example, there is a handy measurement tool that allows you to measure the distance between individual buildings. You can also view local bus routes on the map.