Take all that 5h1t concrete up and plant some grass. Plant a few shrubs around the area. Put two or three forms in it and then, only then, will it be a garden!
When it's a garden, people will be attracted to it and will go in there, sit on a form and have a chat, just like they did in the olden days.
It looks repulsive. It's a concrete jungle. And that cross looks 5h1t!