The Paris Building Age Map

Paris is the latest city to be added to Maps Mania's ever growing directory of building age maps. BatiParis: Période de Construction des Immeubles Parisiens maps the age of buildings in central Paris. It is also a rather good example of the building age genre of interactive mapping. Like other building age maps BatiParis uses a choropleth layer to show the age of buildings, with each building

Maps in the Age of Cholera

Twenty Years before John Snow famously mapped the locations of cholera victims in Broad Street, London, Robert Baker plotted the deaths of cholera victims in Leeds. Maps in the Age of Cholera is a story map based around Robert Baker's 'Sanitary Map of the Town of Leeds' exploring the 1832 cholera epidemic in the Yorkshire town. Baker never made the link between cholera and contaminated water.

Mapping the Ice Age

The last Ice Age occurred 110,000 to 12,000 years ago. The Last Glacial Maximum (LGM) was the last period in this Ice Age when the ice sheets were at their greatest extension. This was around 26,500 years ago. Thanks to the Swiss federal mapping agency you can now view a 2.5D map of how Switzerland looked during the Last Glacial Maximum. You can view the Swiss LGM map in 2.5D, on a WebGL