The first 100 people to go to http://blinkist.com/toptenz are going to get unlimited access for one week to try it out. You’ll also get 25% off if you want the full membership.

→Subscribe for new videos every day! https://www.youtube.com/user/toptenzn...

This video is #sponsored by Blinkist.

Find more lists at: http://www.toptenz.net
Our other YouTube Channels:
Biographics:    / @biographics  
Geographics:    / @geographicstravel  

Business inquiries to [email protected]

Other TopTenz Videos:

10 Incredible Military Inventions
   • 10 Incredible Military Inventions  

10 Simple Technologies That Changed the World
   • 10 Simple Technologies That Changed t...  

Text version: https://www.toptenz.net/mysterious-ru...

Coming up:

10. Kemune
9. The Longyou Caves
8. The Taulas of Menorca
7. The Khatt Shebib
6. The Underwater Cairn of Galilee
5. The Hypogeum of Hal Saflieni
4. Huaca Limón de Úcupe
3. The Danish Labyrinth
2. The Hardknott Fort
1. Göbekli Tepe

Source/Further reading:

https://uk.wikipedia.org/wiki/%D0%A4%...
https://www.flickr.com/photos/isawnyu...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://uk.wikipedia.org/wiki/%D0%A4%...
   • Ancient city discovered in northern Iraq  
https://www.sciencealert.com/archaeol...
https://en.wikipedia.org/wiki/File:Lo...
https://commons.wikimedia.org/wiki/Fi...
https://br.m.wikipedia.org/wiki/Restr...
https://travelandleisureindia.in/long...
https://www.atlasobscura.com/places/l...
   • Las Taulas de Menorca  - Ciencia y Mi...  
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://www.flickr.com/photos/apaame/...
https://www.flickr.com/photos/apaame/...
https://www.flickr.com/photos/apaame/...
https://www.haaretz.com/archaeology/M...
https://www.ancient-origins.net/khatt...
https://www.dailysportx.com/news/arch...
https://select.jo/another-archaeologi...
https://edition.cnn.com/2013/04/19/wo...
https://www.livescience.com/28567-anc...
https://www.israel21c.org/the-mystery...
https://www.israel21c.org/the-mystery...
https://www.ancient-code.com/the-mega...
https://commons.wikimedia.org/wiki/Fi...