Rí Rá Irish Pub — Las Vegas, NV
Leave it to a Vegas establishment to literally have an entire bar constructed in Ireland and then shipped over to the states. If it’s authenticity you’re after, you’re probably not going to get much more authentic than that shit. Bonus points for being situated inside the Shoppes at Mandalay Bay, so if you feel like you haven’t dropped enough dough inside the pub, you’ve got plenty of options outside.