Centennial_Exposition

The Centennial International Exhibition, officially the International Exhibition of Arts, Manufactures, and Products of the Soil and Mine, was held in Philadelphia from May 10 to November 10, 1876. It was the first official world's fair to be held in the United States, and coincided with the centennial anniversary of the Declaration of Independence's adoption in Philadelphia on July 4, 1776.
It was held in Fairmount Park along the Schuylkill River on fairgrounds designed by Herman J. Schwarzmann. Nearly 10 million visitors attended the exposition, and 37 countries participated in it.