Philadelphia hosted the 1876 Centennial Exposition celebrating the United States’ 100th anniversary.
Officially called the International Exhibition of Arts, Manufactures, and Products of the Soil and Mine, the fair opened in Philadelphia on May 10, 1876. It occupied Fairmount Park and ran until November 10. The exposition was timed to the centennial of the Declaration of Independence, which Congress adopted in Philadelphia in 1776.
The fair displayed industrial, agricultural, artistic, and technological achievements from the United States and other countries. Its buildings included Memorial Hall, which survives as part of the Please Touch Museum complex, and the Ohio House. Exhibits helped introduce visitors to new technologies, including Alexander Graham Bell’s telephone.
Philadelphia was a particularly symbolic host because the city had been central to the American Revolution and had hosted the Continental Congress. The Centennial Exposition is often remembered as the United States’ first major world’s fair and as an important predecessor to later national anniversary celebrations, including the 1976 Bicentennial and the 2026 semiquincentennial.