Mo. Rev. Stat. § 566.150
1. Any person who has been found guilty of:
(2) Any offense in any other jurisdiction which, if committed in this state, would be a violation listed in this section;
shall not knowingly be present in or loiter within five hundred feet of any real property comprising any public park with playground equipment, a public swimming pool, or any museum *if such museum holds itself out to the public as and exists* with the primary purpose of entertaining or educating children under eighteen years of age.
(L. 2009 H.B. 62, A.L. 2014 S.B. 491, A.L. 2017 S.B. 34 merged with S.B. 160)
*...* Words do not appear in S.B. 160, 2017.