This very tall and striking display is from http://www.wedding-flowers-guide.com/wedding-centerpieces.html if your looking for that unique table decoration that nobody has seen before then they have lots of creative ideas.
When all the tables in your wedding reception room have tall vases on them it really makes a difference to the room. They are particularly good in venues with high ceilings.
This example is particularly nice because not only is it tall it also has flowers submerged in the vase that adds interest at another level.
Have fun designing and looking for your perfect centrepieces.