Πηγές-Μέσα

Visit the webpages below:

http://www.mysteriousplaces.com/

https://www.theactivetimes.com/travel/40-most-mysterious-places-whole-entire-world

https://www.loveexploring.com/galleries/89068/the-most-mysterious-places-on-earth?page=1

http://www.unesco.org/new/en/culture/themes/underwater-cultural-heritage/

http://esciencenews.com/articles/2009/10/16/worlds.oldest.submerged.town.dates.back.5000.years