User blog comment:Darkcloud1111/Mistakes in The House of Hades/@comment-31729913-20170721042645

in chapter xli (41) told from piper's point of view, on page 319, she says they "landed in Millennial Park" in Chicago. i am a well-bred Chicagoan and there is no Millenial Park in Chicago. It's Millennium Park. *hair flip*