1. A system comprising: a processor; a computer-readable medium comprising instructions that, when executed by the processor, cause the processor to: generate, responsive to a user action associated with changing a viewable area of a geographic map from a first area of the geographic map to a second area of the geographic map, if the change in the viewable area of the geographical map exceeds a pre-determined threshold, a historical thumbnail image associated with one of: the first area of the geographic map; and the second area of the geographic map; and display the historical thumbnail image such that the historical thumbnail image is viewable independent of a subsequent change in the viewable area of the geographic map, wherein selection of the historical thumbnail image causes the processor to display the associated one of the first area of the geographic map and the second area of the geographic map.