Definition of Visual/Spatial Intelligence
The ability to create internal mental pictures. Visual/spatial intelligence deals with such things as the visual arts, navigation, map-making, and architecture.
People highly developed in this intelligence are good at creating pictures in their mind. Whether it be by illustrating those images (as in the case of an artist) or mentally conceptualizing the images (as in the case of an interior designer) such people demonstrate the intellectual capacity of seeing beyond two-dimensional limitations. Such people may also demonstrate the intellectual capacity involved in other creative and artistic things, using colors, reading maps, and probably have a good imagination. They probably like to draw, paint, create sculptures, and imagine things.
There are many websites on Gardner's theory of multiple intelligences. Here is one:
http://www.ed.gov/databases/ERIC_Digests/ed410226.html