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.
Minimalism to the max: Elegant, structured outdoor spaces are anything but austere when combined with lush, statement greenery. Tim Richardson reveals a generous new approach to geometric garden design
Update Your Garden for Spring... What's Modern Now?