The article on the website “Financing the Eiffel Tower” explains this contract in more detail and specifies that “Edouard Lockroy, minister and president of the committee of the Universal Exhibition of 1889 , representing the State, Eugène Poubelle, representing the city of Paris and Gustave Eiffel, signed a tripartite concession agreement” (“Financing the Eiffel Tower”, 2013). This contract established that Eiffel was responsible for the design, construction and financing of the Eiffel Tower. For twenty years after the completion of the Exhibition, the tower will remain under the ownership and control of Eiffel. After twenty years, the Eiffel Tower would be transferred to the City of Paris (“Financing the Eiffel Tower”, 2013). This contract is called Build-Own/Operate-Transfer