In the last thirty years of the 19th century, Brussels introduced trams that were drawn by horse and then powered by steam, battery and finally electricity in 1894. Today, the city has an extensive public transportation system, including the metro, bus and subway. However, some of the old streetcars still operate, like these shown in a mural from the Bourse Premetro Station. A few also were sent to San Francisco and New York where they are still running.