City outside the Greater Region
|{{https://arcgis-portal.public.lu/server/rest/services/GR/Metropolitan_dimension/MapServer/0/images/5601177bcebe10371b54ce05d2c71644?.png?nolink}}|> 50 000 - 500 000|
|{{https://arcgis-portal.public.lu/server/rest/services/GR/Metropolitan_dimension/MapServer/0/images/37bf26f5edb1b92f69fb982fec48c633?.png?nolink}}|> 500 000|
Major and middle-order centres

|{{https://arcgis-portal.public.lu/server/rest/services/GR/Metropolitan_dimension/MapServer/1/images/7901e1fe7ca67f034c993629d2b60022?.png?nolink}}|Major centre|
|{{https://arcgis-portal.public.lu/server/rest/services/GR/Metropolitan_dimension/MapServer/1/images/df005272c9018480b032b313f35e236b?.png?nolink}}|Middle-order centre|
|{{https://arcgis-portal.public.lu/server/rest/services/GR/Metropolitan_dimension/MapServer/1/images/40d801099114a4b2ba04cf8080545315?.png?nolink}}|Centre to be confirmed|
Orientation towards metropolitan areas

|{{https://arcgis-portal.public.lu/server/rest/services/GR/Metropolitan_dimension/MapServer/2/images/fb222f9d64660d25b91e215f65dfcace?.png?nolink}}|Metropolises outside the Greater Region|
|{{https://arcgis-portal.public.lu/server/rest/services/GR/Metropolitan_dimension/MapServer/2/images/353e99a3a89175de1168bd0c933ca594?.png?nolink}}|Cross-border polycentric metroplitan area|
|{{https://arcgis-portal.public.lu/server/rest/services/GR/Metropolitan_dimension/MapServer/2/images/dec116564abfa61d08f885d43ed531d5?.png?nolink}}|Metropolitan area of Northern Wallonie|
|{{https://arcgis-portal.public.lu/server/rest/services/GR/Metropolitan_dimension/MapServer/2/images/c22129a0b2ad374c3a9b8407a7b4620a?.png?nolink}}|Sub-regions of metropolitan character  along the Rhine axis|

|{{https://arcgis-portal.public.lu/server/rest/services/GR/Metropolitan_dimension/MapServer/3/images/be23f41f482e076ed23714ae9c4987a6?.png?nolink}}|Contiguous functional urban area|
Metropolitan area

|{{https://arcgis-portal.public.lu/server/rest/services/GR/Metropolitan_dimension/MapServer/4/images/afb82d828b28afd706e41b2c289b198b?.png?nolink}}|Cross-border polycentric metroplitan area|
|{{https://arcgis-portal.public.lu/server/rest/services/GR/Metropolitan_dimension/MapServer/4/images/c0166844a83ba32fb7f5d39b849fbd94?.png?nolink}}|Metropolitan area of Northern Wallonie|
|{{https://arcgis-portal.public.lu/server/rest/services/GR/Metropolitan_dimension/MapServer/4/images/a9f6d3564b8e3a87ec3dee0e6ec33f23?.png?nolink}}|Sub-regions of metropolitan character along the Rhine axis|