Eglinton Castle in Scotland, now largely demolished, had a "Racket Hall" which is first shown on the 1860 OS map, but estate records show that it was built shortly after 1839, the first recorded match being in 1846. The floor is of large granite slabs, now hidden by the wooden floor. It is the very first covered racket court and is now the oldest surviving court in the world, as well as being the oldest indoor sports building in Scotland. It has been restored as a racket hall, but used as an exhibition area. Some private clubs also built courts. Along with real tennis and badminton, rackets was used as an inspiration for the game of lawn tennis, invented in 1873 by Walter Clopton Wingfield. A vacant rackets court built into the University of Chicago's Stagg Field served as the location of the first artificial nuclear chain reaction on December 2, 1942. The Stagg Field court is often mistakenly identified as having been a "squash rackets" court. Rackets was part of the 1908 Summer Olympics program and was played at the Prince's Club in London.Winner was Evan Noel.