You will need to consider more than just how it will look in a hallway when choosing the best hallway wallpapers.
Because a hallway can typically be viewed from at least two rooms, maybe more, you will need to take into consideration the colors and wall coverings used in those rooms as well, because you do not want the wallpaper to clash. Fortunately, it is usually pretty easy to apply hallway wallpapers, so it is relatively simple to change if you do not like how it looks. Some hallway wallpapers may be applied with simply a peel and stick backing, while others will need to be wet with a sponge for application.
Begin by considering whether you want certain pattern of hallway wallpapers, or specific images on the wallpaper, or a solid color.
In addition, consider whether you want a wallpaper border, to just wallpaper half the wall, or to apply wallpaper to the entire wall. Any method can look nice, and it is purely a matter of personal preference. In a smaller, darker hallway, you may choose to only apply a wallpaper border or to just wallpaper half the wall, to avoid making the space seemed cramped; in a larger, brighter hallway, however, you can apply hallway wallpapers from floor to ceiling.
Another important consideration when choosing hallway wallpapers are the paint and wallpaper colors in the adjoining rooms. It is important that the hallway wallpaper coordinates with the rest of the areas that can be seen from the hallway. The colors and patterns used do not necessarily have to match, but they should at least complement each other, or remain in the same color family.
Since a hallway is such a limited space, it is possible to get a little more creative, or purchase some high quality, more expensive hallway wallpapers. Most wallpaper is flat, but you may be able to find pattern wallpaper that is raised up from the wall, which can look very interesting. This may be referred to as embossed or textured wallpaper, and can give a unique look to a room or hallway; it can sometimes be painted as well.