Maps

Interactive maps that run in the browser, built with free, open tools — Leaflet for the map and OpenStreetMap for the tiles, so there’s no paid service and no API key behind any of them. Some are worldwide, others are organised by city; drill in to find each map.

• Cathedrals of the world

  Every cathedral on Earth — thousands of them, mapped live from OpenStreetMap and colour-coded by denomination.

• London

  Maps of London — starting with the laptop-friendly café chains across the centre of the city.