If you find yourself in Germany or Austria around Easter, you"ll see trees, bushes, and cut branches decorated in colorful eggs such as these. The Ostereierbaum (aka Osterbaum or Easter egg tree), is a German tradition dating back centuries, though no one"s quite sure of the exact origin. Eggs have long been a symbol of rebirth and spring, and the sight of colorful eggs hung by ribbon can melt even the coldest of hearts.