Click on layers below to change their properties.

• OpenStreetMap vector (locally hosted tiles sourced from download.geofabrik.de)
  visible opacity
• OpenTopoMap topological raster (opentopomap.org)
  visible opacity
• NLS OrdnanceSurvey 1896 500:1 raster Newcastle Upon Tyne (geo.nls.uk)
  visible opacity
  Use up/down cursor keys to change spyglass size.
• Wikipedia features layer (data from en.wikipedia.org/w/api.php)
  visible opacity feature limit (10 - 500) feature radius (10 - 10,000 metres)
• OpenStreetMap raster (tile.openstreetmap.org)
• ESRI aerial raster (services.arcgisonline.com)