AHEAD, the European Archive of Historical Earthquake Data 1000-1899, inventories and distributes data of diverse provenance and typology - descriptive studies, intensity data, parametric catalogues - on pre-instrumental European earthquakes. AHEAD relies on eight regional online macroseismic archives, complemented with data from the literature. AHEAD can be queried both by earthquake, to access a multiplicity of data related to each individual earthquake, and by data source.