Wooden trellis has always been a very useful enhancement for any garden, particularly as it's so simple to put in place and very practical when used as a screen to partition sections of the garden, as a boundary fence or purely decoratively.
Fixed against a wall, trellis is a low cost way of covering brickwork with climbing roses and other colourful plants grown in containers underneath. Placed at the back of a border, a similar arrangement will add height and structure.
Domed and curved panels, with diamond or square lattice work, offer varied interest but you'll find that all trellising is a viable alternative to plain wooden fencing. It's not so overbearing, more versatile, and whatever its location or purpose, trellis will definitely be an attractive choice that is quick and easy to fit.