I've long been curious about the barely excavated ruins of the Aztec capital Tenochtitlan under modern-day Mexico City: http://www.bbc.com/travel/story/2019100

I've long been curious about the barely excavated ruins of the Aztec capital Tenochtitlan under modern-day Mexico City: http://www.bbc.com/travel/story/20191007-mexico-citys-secret-underground-world http://www.bbc.com/travel/story/20191007-mexico-citys-secret...