Use the ⏹ button to activate drawing mode. Then use click and drag to draw the box. The area cannot be too large, because the data is loaded on demand from the Overpass API. Center map on my approximate location

Enter the OSM id for the boundary relation representing your area of interest. It cannot be too large (admin_level 6 or higher, bounding box not more than 2 degrees squared), because the data is loaded on demand from the Overpass API. If you don't know the relation ID, you can look it up by searching for your area on the OSM web site.

The complete OSM map data for your area will be downloaded in the background. For a city, this can be multiple 100 megabytes. If you want to use this data for something else later, check this box and a download link will appear after the analysis completes.

Most users can ignore this option. If for whatever reason you cannot use the main Overpass API endpoint, this switches to an alternate endpoint at https://overpass.kumi.systems.