Some people never outgrow Legos, and the company obliges with sets that will challenge any age.
Plastics professionals understandably have a special affinity for these ABS bricks. A number of Star Wars–themed sets are considered to be among the most difficult to assemble—you will want the force to be with you if you tackle the Millennium Falcon, which has almost 5,200 pieces—but the Taj Mahal (pictured) bests that at almost 6,000 pieces. The Eiffel Tower set has a relatively paltry 3,428 pieces, but since they are almost all grey, putting this 3D puzzle together can be equally challenging. The sets start at a couple hundred dollars.
Image courtesy Lego.
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