- This unique multi challenge puzzle presents 3 difficult Word Puzzles & also the standard Tower of Hanoi along with 2 far more challenging variations using Twin Towers of Hanoi. The 3 Towers are each made of a different ¼” thick hardwood, deeply laser engraved and with a fine lacquer finish. The largest wheel diameter is 3.7”. Base Dimensions are 4” x 12.6” x .5” Made in Hudson, Florida. Word Towers design by Dave Janelle, copyright Creative Crafthouse.