The Gastown Steam-Clock has a special noise. This is a sort of whistle, that's different from the hourly bell that rings in these types of clocks.
The special clock was built in 1977 during renovations on the neighborhood. Actually, it was built here for better use the street pipe, that was used to heat buildings in the area. The clock was actually created to conceal the pipe, and stop homeless people from sleeping next to the hot pipe in the cold winter.
Since this is a popular tourist attraction, the steam mechanism was recreated here, with financial support from local businesses. Even though the invention is modern, the famous clock is part of the history of the neighborhood.
Either way, it looks impressive and unique because the steam is what operates the clock dials, and responsible for the whistling of the clock every 15 minutes.
The whistling steam-clock is located in the old neighborhood of Vancouver, Gastown, on the corner of Water Street and Cambie Street.