Eugenio Serrano de Casanova tried to launch an exposition in 1886, and when that failed, the Mayor of Barcelona, Francesc Rius i Taulet, took over[1] the planning of the project. The fair was hosted on the reconstructed 115-acre (47 ha) site of the city's main public park, the Parc de la Ciutadella, with Vilaseca's Arc de Triomf forming the entrance.[1] More than 2 million people from Spain, the rest of Europe, and other international points of embarkation visited the exhibition,[3] which made the equivalent of 1,737,000 United States dollars.[2] The fair was opened by Alfonso XIII of Spain and Maria Christina of Austria.[1] Twenty-seven countries participated, including China, Japan and the United States.[3]