In an annual tradition reminiscent of another era, hordes of livestock take over the Spanish capital once a year https://on.natgeo.com/2RXIqwf

In an annual tradition reminiscent of another era, hordes of livestock take over the Spanish capital once a year https://on.natgeo.com/2RXIqwf 

https://twitter.com/NatGeoTravel/status/1073095313810997248