Every mountain, building and tree shadow mapped for any date and time

Historical topomap explorer — Access Over 181,000 USGS Historical Topographic Maps

Submarine cable map

MapSCII is a Braille & ASCII world map renderer for your console

Using LiDAR to map tree shadows

Open-source maps for everyone, powered by Headway and OpenStreetMap

OpenRailwayMap (previously called "Bahnkarte") is a detailed online map of the world's railway infrastructure, built on OpenStreetMap data.