Each pair of tapered wall sections (they are handed) are designed to match up with the height of the retaining walls, and can also be used to create a ramp in conjunction with the matching bridge kits.
This kit contains two pairs of wing walls and one pair of bridge sections.
Other red brick structures you might also consider for modelling:
Looking for something to stick this kit together with? We recommend Deluxe Materials DLAD-57 Roket Card Glue. To help prevent unwanted glue spills when constructing it is advisable to use a MEMT907 Fine Glue Applicator Bottle.