>>> WELCOME BACK. TODAY IS ST. PATRICK'S DAY. ONE OF THE MOST WIDELY CELEBRATED EVENTS OF THE WORLD. >> IN THE BAY AREA, THE CITY OF DUBLIN IS MARKING THEIR 40th YEAR, COMMEMORATING A RELIGIOUS HOLIDAY THAT HAS CHANGED A LOT OVER THE YEARS. JOHN RAMOS HAS THE STORY. >> EVERY YEAR THOUSANDS OF PEOPLE COME TO DUBLIN TO CELEBRATE A PIECE OF HISTORY THAT TURNS OUT VERY FEW PEOPLE KNOW ANYTHING ABOUT. ♪ [ MUSIC ] ♪ >> I THINK IT IS AWESOME. I MEAN IT'S A WEEKEND A YEAR THAT EVERYONE IN DUBLIN BECOMES IRISH. >> Reporter: IT'S ST. PATRICK'S DAY IN DUBLIN, WHICH LOOKS A LOT LIKE THE COUNTY FAIR, EXCEPT THE KETTLE CORN IS GREEN, AND VISITORS MUST SEARCH THROUGH THEIR CLOTHING TO FIND ANYTHING THAT LOOKS REMOTELY GREEN IN COLOR. >> THE GREEN IS NOT A COLOR I WEAR TYPICALLY, SO IT'S A LITTLE -- I HAVE TO SEARCH FOR SOMETHING LIKE A CUSTOM 49ERS GREEN T-SHIRT. >> I THINK DRESSING UP MAKES IT THE PART THAT IS A PART OF THE HOLIDAY. THAT'S WHAT MAKES THE HOLIDAY. >> JEFF CAMPBELL IS 50% IRISH, WHICH WILL MAKE HIM ABOUT 100% MORE THAN MOST OF THE FESTIVAL GOERS. HE'S BEEN TO THE OLD COUNTRY AND SAYS THEY ARE NOT SURE WHAT TO MAKE OF AMERICA'S ST. PATRICK'S DAY TRADITIONS. >> I THINK MOST OF THEM WILL SHAKE THEIR HEADS. JUST LIKE WHAT'S UP WITH THEM? >> THEY DON'T UNDERSTAND THIS? >> NO. THEY DON'T QUITE UNDERSTAND IT. RIGHT. >> Reporter: BUT THAT'S OKAY BECAUSE THE IRISH SEE THEMSELVES AS A FUN LOVING PEOPLE, ALWAYS LOOKING FOR ANY REASON TO CELEBRATE. >> IT IS KNOWN AS THE IRISH OUTLOOK ON LIFE. >> Reporter: BUT LIVE STREAMING THE FESTIVAL ADMITTED THAT IT DOES SEEM LIKE A PECULIAR HOLIDAY. >> YOU KNOW, I'LL BE HONEST, I DON'T KNOW MUCH ABOUT ST. PATRICK'S. ALL I KNOW IS HE'S IRISH WITH A NICE BIG BUILD. I CAN'T GROW ONE. AND I ENVY THAT GUY, YOU KNOW? >> Reporter: TUNS OUT THE PATRONS SAINT OF IRELAND WASN'T IRISH AT ALL. ABDUCTED AT A YOUNG AGE FROM ROMAN CONTROLLED BRITAIN AND TAKEN TO IRELAND AS A SLAVE. HE ESCAPED, BUT LATER RETURNED AS A PRIEST TO CONVERT THE MASSES TO CHRISTIANITY. SO THE CHURCH MADE HIM A SAINT AND EVEN SUSPENDED THE BAN ON ALCOHOL DURING HIS FEAST DAY THAT MAY BE WHY DRINKING HAS ALWAYS BEEN A PART OF THE HOLIDAY'S TRADITION. >> OKAY, ALL RIGHT. THAT MAKES SENSE. HEY, YOU KNOW, CELEBRATE THE CATHOLIC SAINT, RIGHT? >> WITH A BEER. WITH MORE THAN ONE PROBABLY. >> AND THE CITY OF DUBLIN WOULDN'T HAVE IT ANY OTHER WAY. >> AFTER 40 YEARS OF DOING THIS, I MEAN IT'S BECOME A STAPLE, YOU KNOW. THIS IS A SIGNATURE EVENT FOR THE CITY OF DUBLIN. SO WE CANNOT NOT CELEBRATE ST.
