The Yonugani Monument
https://en.wikipedia.org/wiki/Yonaguni_Monument
https://grahamhancock.com/galleries/underwater-ruins/yonaguni-main-monument/
Pumapunku
https://en.wikipedia.org/wiki/Pumapunku
http://www.amusingplanet.com/2015/05/the-mystery-of-puma-punkus-precise.html

The Bimini Road
https://en.wikipedia.org/wiki/Bimini_Road
http://www.ancient-origins.net/myths-legends/does-bimini-road-lead-lost-civilization-atlantis-002070

The Lake Kinneret Structure
https://edition.cnn.com/2013/04/19/world/meast/israel-ancient-structure-mystery/index.html
http://www.israelnationalnews.com/News/News.aspx/168787

Asuka Stones
http://www.megaliths.org/browse/category/3/view/142
http://www.ancient-origins.net/ancient-places-asia/mysterious-monoliths-asuka-nara-and-rock-ship-masuda-001415

Olmec Colosal Heads
https://en.wikipedia.org/wiki/Olmec_colossal_heads
https://www.thevintagenews.com/2017/02/20/mexicos-olmec-colossal-heads-are-a-mystery-as-to-their-age-and-their-method-of-construction/

Naupa Iglesia
http://www.ancient-origins.net/ancient-places-americas/who-built-fascinating-aupa-iglesia-mysterious-ruins-sacred-valley-peru-021345
http://www.megalithic.co.uk/article.php?sid=30051

The Castle of Lake Van
http://www.iflscience.com/editors-blog/mysterious-3000yearold-castle-found-hidden-in-turkish-lake/
https://www.livescience.com/61038-real-story-of-ancient-underwater-castle.html

The Stone Gates
https://www.forbes.com/sites/trevornace/2017/10/18/400-mysterious-stone-gates-discovered-in-remote-saudi-arabia/#6227463aa1b3
https://www.nytimes.com/2017/10/19/science/saudi-arabia-gates-google-earth.html

Gobekli Tepe
https://en.wikipedia.org/wiki/G%C3%B6bekli_Tepe
https://www.smithsonianmag.com/history/gobekli-tepe-the-worlds-first-temple-83613665/