The present invention provides a system, method, and software application for enabling a user to view data from an external data source in a visual map, wherein the external data source has a web services interface. Visual mapping software on a computer provides a visual mapping interface in which a user can create, edit, and/or view a visual map. Within the visual mapping interface, the visual mapping software provides the user with an option to obtain data from one or more data sources associated with a web service. In response to the user selecting a data source associated with a web service, the visual mapping software builds a web service request for the web service associated with the selected data source. The visual mapping application makes a call to the applicable web service with the web service request. The visual mapping application subsequently receives data from the web service and transforms the data into a format that can be used to generate visual map data. The visual mapping software then displays the data in a visual map.