Screen Shot 2016 01 07 at 3.03.44 PMInstagramThe Taj Mahal.
Lego bricks aren't just for stepping on and screaming in horror. 
They're also quite the commodity.
The beloved building toy has spawned a secondary market where rare sets can be worth thousands. 
With the help of Jeff Maciorowski from the Lego investing site Brickpicker, we present to you the 25 most valuable Lego sets in history. 

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