To be considered as HISTORIC LIGHTHOUSE, the station must also satisfy at least 3 of the following criteria:
- Engineering and technical achievements related to the location and/or the building time
- Architectural interest ( design, use of material,...)
- National or local interest ( history, culture,...)
- Archaeological importance
(definition retained for the purpose of the lighthouse book)
This definition was set out in 1998 and references to the range of the light should be considered as the maximum range during the history of the lighthouse. In a heritage definition a lighthouse station includes all Aids to Navigation related to the site.
See also Lighthouse (PHL)