Doors Open Toronto festival, line-up for Toronto Transit Commission's Bay Lower Station Tour, outside the Cumberland Terrace building.  The line stretched to Yonge St, and took 40 minutes to move into the bay St. entrance.
<a href="//commons.wikimedia.org/wiki/User:Abebenjoe" title="User:Abebenjoe">Abebenjoe</a>
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>