This is a very good way to get acquainted with a city. The concept of free walking tour assures the guide works to hold the attention of the group through the end of the tour. Brian in downtown and Gastown, and Erik in Chinatown, did their jobs very well. Groups are smaller in wintery weather and they allow for interaction but keep the group together and on schedule. They introduce little known tidbits of history and lore that make the city more familiar. Thanks to the Tour Guys I feel that I know Vancouver much better.