The Duquesne Gardens was the main sports arena located in Pittsburgh, Pennsylvania, during the first half of the 20th century. Built in 1890, the building originally served as a trolley barn, before becoming a multi-purpose arena. The Gardens opened 3 years after a fire destroyed the city's prior sports arena, the Schenley Park Casino, in 1896. Over the years, the Gardens was the home arena of several of Pittsburgh's historic sports teams, such as ice hockey's Pittsburgh Pirates and Pittsburgh Hornets. The Western Pennsylvania Hockey League, which was the first ice hockey league to openly hire and trade players, played all of its games at the Gardens. The arena was also the first hockey rink to ever use glass above the dasher boards. Developed locally by the Pittsburgh Plate Glass Company, Herculite glass was first tested in Pittsburgh. Most rinks were using wire mesh before the shatterproof glass was invented.