Geology of Hong Kong - https://www.cedd.gov.hk/eng/about-us/organisation/geo/pub_info/memoirs/geology/index.html
Geological landscapes (Hong Kong) - https://www.cedd.gov.hk/eng/about-us/organisation/geo/pub_info/memoirs/geology/geological-landscapes/index.html
Physical landscapes - human modification (Hong Kong) - http://www.hkmemory.org/landscape/index.html
Geological map (Hong Kong) - https://www.cedd.gov.hk/filemanager/eng/share/map/geo_map_2.html
Coastal deposits map (Hong Kong) - https://www.cedd.gov.hk/filemanager/eng/share/map/qmap3.html
Landforms & places - Glossary (Hong Kong) - https://www.cedd.gov.hk/eng/about-us/organisation/geo/pub_info/memoirs/geology/glossaryofplace/index.html
Hong Kong Geopark - https://www.geopark.gov.hk/en/index.htm
2. Transport & Regional development
Openstreetmap - https://www.openstreetmap.org/#map=10/22.3567/114.1363
Geoinfomap, Hong Kong - https://www.map.gov.hk/gm/
Living atlas - https://livingatlas.arcgis.com/en/