Wolfram Technology Guide: Load-on-Demand Curated Data  previous | next 
Built-in Example Data
Mathematica includes a wide selection of example data, including images, 3D geometry, text, matrices, and more.
In[1]:=

Click for copyable input
ListContourPlot[

 Reverse[ExampleData[{"TestImage", "Lena"}, "GrayLevels"]], 

 ColorFunction -> "Rainbow"]
Out[1]=