A method of operation of a navigation system, the method comprising: providing a graphics user interface; providing, in the graphics user interface, a representation of at least a portion of a first calculated route to an original destination; providing a data representation of a real-world path sign (128, 300, 417) in the graphics user interface, the data representation of the real-world path sign representing a textual character, word (306, 314, 368, 376), symbol (316, 320), or an icon (304, 308, 312, 360, 364, 372) of the real-world path sign, wherein the data representation of the real-world path sign represents a real-world sign along the at least a portion of the first calculated route, is associated with the portion of the first calculated route, and is provided as a feature of the graphics user interface; receiving, while driving to the original destination, a user selection identifying a portion of the data representation of the real-world path sign, wherein receiving the user selection comprises receiving a selection via the textual character, the word (306, 314, 368, 376), the symbol (316, 320), or the icon (304, 308, 312, 360, 364, 372); and providing a navigation-related function in respect of the data representation of the real-world path sign based on receiving the user selection, wherein providing the navigation-related function comprises using a second calculated route to a different destination from the original destination of the first calculated route based on the user selection or using a changed calculated route to the original destination of the first calculated route based on the user selection. providing a graphics user interface; providing, in the graphics user interface, a representation of at least a portion of a first calculated route to an original destination; providing a data representation of a real-world path sign (128, 300, 417) in the graphics user interface, the data representation of the real-world path sign representing a textual character, word (306, 314, 368, 376), symbol (316, 320), or an icon (304, 308, 312, 360, 364, 372) of the real-world path sign, wherein the data representation of the real-world path sign represents a real-world sign along the at least a portion of the first calculated route, is associated with the portion of the first calculated route, and is provided as a feature of the graphics user interface; receiving, while driving to the original destination, a user selection identifying a portion of the data representation of the real-world path sign, wherein receiving the user selection comprises receiving a selection via the textual character, the word (306, 314, 368, 376), the symbol (316, 320), or the icon (304, 308, 312, 360, 364, 372); and providing a navigation-related function in respect of the data representation of the real-world path sign based on receiving the user selection, wherein providing the navigation-related function comprises using a second calculated route to a different destination from the original destination of the first calculated route based on the user selection or using a changed calculated route to the original destination of the first calculated route based on the user selection.