U.S. Bank Center
... that the U.S. Bank Center in Seattle once had a Montessori school on the 23rd floor?
... that the <b id="mwBMc"><a href="./U.S._Bank_Center_(Seattle)" id="mwBMg" rel="mw:WikiLink" title="U.S. Bank Center (Seattle)">U.S. Bank Center</a></b> in <a href="./Seattle" id="mwBMk" rel="mw:WikiLink" title="Seattle">Seattle</a> once had a <a href="./Montessori_education" id="mwBMo" rel="mw:WikiLink" title="Montessori education">Montessori school</a> on the 23rd floor?