The 108-story <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Sears_Tower" id="mwAQ8" rel="mw:WikiLink" title="Sears Tower">Sears Tower</a> in Chicago is topped out at <span about="#mwt121" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"1,451"},"2":{"wt":"feet"}},"i":0}}]}' id="mwARA" typeof="mw:Transclusion">1,451 feet (442</span><span about="#mwt121" typeof="mw:Entity"> </span><span about="#mwt121">m)</span> as the <a class="mw-redirect" href="https://en.wikipedia.org/wiki/World's_tallest_building" id="mwARE" rel="mw:WikiLink" title="World's tallest building">world's tallest building</a>.<sup about="#mwt125" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-20"}}' id="cite_ref-20" rel="dc:references" typeof="mw:Extension/ref"><a href="./May_4#cite_note-20" id="mwARI" style="counter-reset: mw-Ref 20;"><span class="mw-reflink-text" id="mwARM">[20]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-20"><cite about="#mwt122" class="citation book cs1" id="CITEREFNorris_McWhirterRoss_McWhirter1994">Norris McWhirter; Ross McWhirter (1994). <a class="external text" href="https://books.google.com/books?id=ZixNAQAAIAAJ" id="mwBlk" rel="mw:ExtLink nofollow"><i id="mwBlo">The Guinness Book of Records</i></a>. Guinness Superlatives. p.<span id="mwBls" typeof="mw:Entity"> </span>98. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwBlw" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwBl0" typeof="mw:Entity"> </span><a href="./Special:BookSources/9780851125121" id="mwBl4" rel="mw:WikiLink" title="Special:BookSources/9780851125121"><bdi id="mwBl8">9780851125121</bdi></a>.</cite><span about="#mwt122" class="Z3988" id="mwBmA" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=The+Guinness+Book+of+Records&amp;rft.pages=98&amp;rft.pub=Guinness+Superlatives&amp;rft.date=1994&amp;rft.isbn=9780851125121&amp;rft.au=Norris+McWhirter&amp;rft.au=Ross+McWhirter&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DZixNAQAAIAAJ&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AMay+4"></span></span>