Spread across two continents, Istanbul contains the ruins of empires past, from the Hagia Sophia to the Blue Mosque to the Galata Tower https://on.natgeo.com/2MdJRYH

Spread across two continents, Istanbul contains the ruins of empires past, from the Hagia Sophia to the Blue Mosque to the Galata Tower https://on.natgeo.com/2MdJRYH 

https://twitter.com/NatGeoTravel/status/1028506402610966528