From captivating art exhibitions to miraculous, exposed bedrock—there are endless reasons to enjoy the ride on these subways around the world https://on.natgeo.com/2XUiNni

From captivating art exhibitions to miraculous, exposed bedrock—there are endless reasons to enjoy the ride on these subways around the world https://on.natgeo.com/2XUiNni 

https://twitter.com/NatGeoTravel/status/1152281796446498817