Koechlin, Nouguier, Sauvestre, and Eiffel submitted the plans to compete for the spot on the champ de mars plot of land, to serve as the expositions entrance. It would also determine the 1889 world's fair centerpiece in Paris. There were 107 bids submitted to construct the Eiffel Tower. Fifty people worked on the design, and more than 100 built the parts. One hundred and thirty two workers assembled the parts on site.