National Coffee Day is celebrated every year on September 29th. Coffee is one of the worlds most popular beverage Coffee beans are native to tropical parts of Africa and were discovered in the 11th century. According to Guinness World Records, the largest cup of coffee was 22,739 liters (6,007 US gal). It was brewed by Alcaldia Municipal of Chinchina in Caldas Colombia on June 15th, 2019. It took 50 people more than a month just to build the cup. The world's most expensive coffee is the kopi luwak with prices ranging from $100 US to $500 US, per pound. The coffee is produced when Civets (kind of like a cat looking racoon thing) eat coffee cherries and their digestive enzymes break down specific proteins in the beans. It is later defecated and collected for coffee. So the most expensive coffee in the world is made from poop. Just so we're clear on that....

Ever wanted to learn how people have their coffee around the world? Watch the 2014 documentary A Film About Coffee to learn more about the unique ways coffee is brewed and consumed globally.

National Chains giving away free coffee today:

Starbucks Rewards members who order a grande or larger by using the order ahead and pay feature in the Starbucks app will receive a free drink loaded into their account for use on their next visit.

Krispy Kreme is giving a free coffee with no purchase necessary. Those that have rewards memberships can get a free donut of their choice, as well.

Order anything from Jack in the Box through the app and you can get a free regular-sized hot or iced coffee.

Peete's Coffee The West Coast-founded chain is offering coffee lovers 25% all beans with the COFFEEDAY20 code.

Here are some of the top voted Treasure Valley Coffee Spots ... Do you see your favorite?

YELP: The Best 10 Coffee & Tea in Boise, ID

What is your favorite coffee spot and your favorite coffee order?