Help, can't figure out what's wrong! bootstrap 7/14


#1

Neighborhood Guides: Images 2
I keep getting the message:
"Oops, try again. Add a <div class="thumbnail">..</div>".
I checked multiple times, and cannot find missing tags or anything,
can anyone see the problem?

<div class="neighborhood-guides">
 <div class="container">
   <h2>Neighborhood Guides</h2>
   <p>Not sure where to stay?We've created neighborhood guides for cities all around the world.</p>
   <div class="row">
     <div class="col-md-4">
     
     <div class="thumbnail">
      <img src="http://goo.gl/0sX3jq" >
    </div>
    

    <div class="thumbnail">
      <img src="http://goo.gl/an2HXY" >
    </div>
  </div>
     
     
   </div>
     
     <div class="col-md-4">
<div class="thumbnail">
      <img src="http://goo.gl/Av1pac">
    </div>
    <div class="thumbnail">
      <img src="http://goo.gl/vw43v1">
    </div>
  </div>
  
  <div class="col-md-4">
    <div class="thumbnail">
      <img src="http://goo.gl/0Kd7UO">
    </div>
  </div>
  
</div>

#2

At the end of your first column there are three /div tags. One of them closes the thumbnail - that's good, one closes the column - also good, one of them closes the row -- that's bad. The plan is to close the row after the third column.