Abstract: A system and method for representing an instance of airspace is disclosed. The system includes a two-dimensional aeronautical chart and a three-dimensional model. The aeronautical chart provides information representing the dimensions of an instance of airspace (e.g., the size and shape of a class of airspace). The model translates the information provided by the aeronautical chart into a three dimensional tool that enables a user to readily envision the airspace parameters define by the chart. The model may have a unitary structure or include a plurality of pieces, each piece defining an altitude block. The pieces may be reconfigurable, and may be selectively coupled to create a series of continuous altitude blocks that define an instance of airspace. With this configuration, exact, three-dimensional navigational representations of airspace are provided.