As of this weekend we now have three of the buildings glued in place. The tower block is surrounded by fancy paving - actually plastic card textured with a French-style cobblestone pattern (the grey areas).
The green areas are sloping roadways made from Green Stuff. Brown is the beginning of the landscaped areas. The motorway will join on at the right hand end of this picture.
Next task is to add texture material under the trees to form the wide central reservation between the diverging carriageways.