Complex sentence: In the early 20th century, the station was completely redesigned and rebuilt and re-opened in 1922, which included the Victory Arch the main entrance, which commemorated World War I. Waterloo was the last London terminus to provide steam-powered services, which ended in 1967.
Split into simpler sentences: In the early 20th century, the station was completely redesigned and rebuilt and re-opened in 1922. The redesigned station included the Victory Arch over the main entrance, which commemorated World War I. Waterloo was the last London terminus to provide steam-powered services, which ended in 1967.