A display representing a tree, such as a Christmas tree, has a trunk made of a hollow tube and held by a base in substantially vertical position. A liquid, such as water, is placed in the tube and an air supply in or near the bottom of the tube generates bubbles that rise through the tube. The tube and bubbles therein are preferably illuminated to add to the effectiveness of the display. Illumination can be provided by LED's which avoid the heat of incandescent lamps. Branches are secured to the trunk tube and extend outwardly therefrom to support a foliage garland to provide tree foliage and give the display the appearance of a tree. The tree can be provided as a separate trunk tube portion, base, and foliage garland so the parts can be packed and shipped without the base attached to the tube.