507 pieces;Tesselz have unusual shaped pieces that tessellate or tile together every way you turn them, adding a unique twist to jigsaw puzzles.;The Imagination Project was founded in 1994 to create innovative products that entertain and stimulate the mind.;Completed puzzle is 18 v 27.

• Tesselz Leaning Tower of Pisa Square and Diamond Series - Tessellation Jigsaw Puzzle

Tesselz Leaning Tower of Pisa Square and Diamond Series - Tessellation Jigsaw PuzzleImagination Project, a division of Panda Enterprises