Top 5 Kookiest Christmas Trees

From an upside down tree, to the Pac-Man tree, here are are few of the world's most interesting Yuletide conifers. See all of the World's Wildest Christmas Trees, including a traffic light tree and a floating tree, at thisoldhouse.com

• 1. Pac-Man Tree

  

  Pac-Man and all his friends are rendered in LED lights across this giant static light display in Madrid. RELATED: 13 Ways the Holidays Can Kill You

• 2. Soda Pop Tree

  

  A really green way to "do the Dew," this tree is made up of 400 Mountain Dew soda cans. A PVC-pipe trunk holds up the aluminum tower while a two-liter bottle-light adorns the top. RELATED: Best Holiday Home Memories

• 3. Bicycle Tree

  

  One hundred neon-lit bicycles make up this tree in Sydney. Located in a popular tourist district called The Rocks, the bicycles were painted green with red or gold tires and strategically piled to create this eco-friendly decoration. RELATED: Smart Ways to Store Holiday Decorations

• 4. Plastic Fork Tree

  

  At first glance, this tree looks like your standard tinsel-covered affair. But, it's actually built entirely out of clear plastic silverware. This masterpiece was displayed as part of 2009's annual Festival of Trees in Methuen, Massachusetts. RELATED: $1 Homes for the Holidays

• 5. Upside Down Tree

  

  Want a kooky tree of your own? Buy this upside down tree (inspired by the12th-century European tradition of hanging a tree from the ceiling)) from Hammacher Schlemmer. This pre-lit seven-foot fir guarantees that your tree will be a talking point at this year's holiday party.