Gabion walls don't need any kind of drains because they are porous throughout. Gabions can be customized to make them more useful in public spaces. Gabions can be filled with any heavy material--diverse stones, metal artifacts, obtanium, etc.
Arquitectura con Gaviones - arquitecturaObrasweb.mx
Water Feature by Kingfisher , originally uploaded by Badec Bros Deco. This gabion water feature was cleverly designed and installed by Kingfisher Landscaping making use of gabion walls manufactured by Badec Bros Deco.