I have been wanting for some time now to make the Eiffel Tower.
I downloaded the plans from here; I made them twice their size and printed them. There were five parts of the tower(the lower part on the second page is the one from the top on the first page) and I made them four times each with the 3D pen.
Then I used the 3D pen to join them together.And that's it! Hope you enjoy!
In this GIF I only placed the pieces, there were not joined together.