As previously puzzling the lighthouse and the Leaning Tower of Pisa was (round objects), the puzzle fell in these objects from a little more difficult because you have to build around the corner.
The easiest way is, once you get all the puzzle pieces buckled properly numbered and sorted by the Eckpuzzleteile, so that a grader angle. The pieces can be put together very well and hold without glue very good.
The Taipei 101 is puzzling from 216 plastic puzzle pieces and various plastic intermediate levels and put the end to a base plate. Finish the Taipei 101 is 49 cm tall.
My children (8 years + 11 years) are thrilled with fun in the matter. I would recommend the 3D puzzle by Ravensburger without hesitation.