Map Example 3

There are a couple maps on this page that use buttons / sliders to compare maps to each other. Not exactly a layover, but still pretty close.

http://news.nationalgeographic.com/news/2013/11/131103-national-geographic-maps-atlas-changes-cartography/?source=maps

Interactive Button Map

European History through Time

This map uses left and right arrow styled buttons to move the map viewer through a series of maps that represent Europe during different time periods 900BC through present.

Lab 1

These images show the land on the coast of Banda Aceh from June to December after a 9.1-9.3 earthquake. The outline shown in the photo is a trace of the original coastline.

Interactive Map of Washington DC

http://washington.org/dc-map

It's too cluttered but whatever, so is DC.