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User guide


The most exciting feature which gives its name to this website, a layer is historic data represented on top of the main Layers of London map area. The most common layer you will come across is a georeferenced* image of a historic map of London, such as the 1682 Morgan Map. Additionally, a layer may include other important information such as boundaries, places, and parish data.

This guide explains the layers feature in detail and how to use them.