The 1929 Barcelona International Exposition (also 1929 Barcelona Universal Exposition, or Expo 1929, in Catalan: Exposició Internacional de Barcelona de 1929) was the second World Fair to be held in Barcelona, the first one being in 1888. It took place from 20 May 1929 to 15 January 1930 in Barcelona, Catalonia, Spain. It was held on Montjuïc, the hill overlooking the harbor, southwest of the city center, and covered an area of 118 hectares (291.58 acres) at an estimated cost of 130 million pesetas ($25,083,921 in United States dollars). Twenty European nations participated in the fair, including Germany, Britain, Belgium, Denmark, France, Hungary, Italy, Norway, Romania and Switzerland. In addition, private organizations from the United States and Japan participated.