In 1896, the Devon Horse Show started as a one-day show. Now, years later, it has become the oldest and largest outdoor multi-breed competition in the United States. It is internationally recognized, USEF-rated 6* Jumpers/Premier Hunters, and one of the most exciting events to happen in our area. While it draws top competitors from around the world, the show continues to reflect the local traditions and lifestyles of the Philadelphia Main Line.