Here's the 1971 Coca-Cola ad that played during the 'Mad Men' finale

Warning: If you haven't watched the "Mad Men" series finale, there are spoilers ahead.

"I'd like to build the world a home And furnish it with love Grow apple trees and honey bees And snow white turtle doves. I'd like to teach the world to sing in perfect harmony. I'd like to buy the world a Coke and keep it company."

The series finale of "Mad Men" closed with the famous 1971 Coca Cola ad "I'd like to Buy the World a Coke."

McCann Erickson advertising executive Bill Backer came up with the concept for the ad, which eventually cost over $250,000 to make.

Check it out below:

The idea for the ad, originally known as the Hilltop ad, came after a plane flying Backer was forced to land in Ireland. You can read more on the making of the ad on Coca-Cola's site, here.