Francis Olympic Field is a stadium at Washington University in St. Louis that was used as the main venue for the 1904 Summer Olympics. It is currently used by the university's track and field, cross country, football, and soccer teams. It is located in St. Louis County, Missouri on the far western edge of the university's Danforth Campus. Built in time for the Louisiana Purchase Exposition, the stadium once had a 19,000-person seating capacity, but stadium renovations in 1984 reduced the capacity to 3,300 people. It is one of the oldest sports venues west of the Mississippi River that is still in use. Francis Olympic Field now uses artificial turf that can be configured for both soccer and football.