Portals, entrances and transitions. When there is no distant or territorial view to appreciate, you can conjure an interior view. Garden designers use visual tricks to draw and direct the eye — and you can adopt a similar strategy in your own backyard. Here, a full-scale doorway has been inserted into a fence. When open, it reveals a lovely scene within. With thoughtful planning and placement of plants, the designer has created a spectacular visual treat that invites further exploration. The fence and doorway may be entirely functional, but they define and frame the way one observes the garden.