http://intelligenttravel.nationalgeographic.com/2014/10/30/worlds-most-haunted-cities/
https://www.yahoo.com/style/visit-if-you-dare-yahoo-1282578440773686.html
http://www.insidermonkey.com/blog/the-6-most-haunted-cities-in-america-159175/
http://www.usatoday.com/story/travel/destinations/2012/10/24/americas-10-most-haunted-cities/1655281/
http://www.toptenz.net/top-10-most-haunted-cities-in-the-u-s.php
http://www.glasgowlive.co.uk/news/glasgow-news/eight-most-haunted-spots-glasgow-11444541
http://www.huffingtonpost.ca/bernie-farber/ghosts-of-niagara_b_1565156.html
http://www.ghostwalks.com/niagaraonthelake-hauntedniagara.htm
https://www.thesun.co.uk/archives/news/68980/britains-most-haunted-village/