Irish Pub: Colm Dalton wants to visit every pub in the world

It feels like there's an Irish pub in every holiday destination. With that in mind, Irishman Colm Dalton's goal is incredibly ambitious: He wants to visit all 6,500 Irish pubs in the world. So far, he's been to 97 pubs in 47 countries. That's a long way off, but at least he's had a Guinness in everything from São Paulo to the Azores...