A dedication ceremony is held at the United States <a href="https://en.wikipedia.org/wiki/National_September_11_Memorial_&amp;_Museum" id="mwAdk" rel="mw:WikiLink" title="National September 11 Memorial &amp; Museum">National September 11 Memorial</a> on the 10th anniversary of the <a href="https://en.wikipedia.org/wiki/September_11_attacks" id="mwAdo" rel="mw:WikiLink" title="September 11 attacks">September 11 attacks</a> in New York City, and the memorial opens to family members.<sup about="#mwt121" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-21"}}' id="cite_ref-21" rel="dc:references" typeof="mw:Extension/ref"><a href="./September_11#cite_note-21" id="mwAds" style="counter-reset: mw-Ref 21;"><span class="mw-reflink-text" id="mwAdw">[21]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-21"><cite about="#mwt118" class="citation news cs1" id="mwCJU"><a class="external text" href="http://www.cnn.com/2011/12/29/us/new-york-911-memorial/" id="mwCJY" rel="mw:ExtLink nofollow">"Visitors to New York's 9/11 memorial top 1 million"</a>. <i id="mwCJc">CNN</i>. 29 December 2011. <a class="external text" href="https://web.archive.org/web/20121006043620/http://www.cnn.com/2011/12/29/us/new-york-911-memorial" id="mwCJg" rel="mw:ExtLink nofollow">Archived</a> from the original on 6 October 2012<span class="reference-accessdate" id="mwCJk">. Retrieved <span class="nowrap" id="mwCJo">29 December</span> 2011</span>.</cite><span about="#mwt118" class="Z3988" id="mwCJs" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=article&amp;rft.jtitle=CNN&amp;rft.atitle=Visitors+to+New+York%27s+9%2F11+memorial+top+1+million&amp;rft.date=2011-12-29&amp;rft_id=http%3A%2F%2Fwww.cnn.com%2F2011%2F12%2F29%2Fus%2Fnew-york-911-memorial%2F&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3ASeptember+11"></span></span>