Help me with my blank issue :D

So i have been on here a fair bit recently sharing my designs for the skyscraper I have been working on, now I have turned my attention to the outside plaza and have been creating sublime wonders :D

unfortunatly I have hit a bit of a block with this area and hte one the other side of the door

Flower beds would be stupid in this area.. any suggestion fro what else to try? There is already A LOT of water about so that could work as filler but I am ideally looking for something else...

Thanks for any ideas ~Twitchi