Why Everything Is Going to Cost $3.14 on Friday

In celebration of Pi Day, restaurants and bars around the country are hosting tons of nerdy math-themed promotions this Friday, March 14 (3.14), most involving pizzas or slices of pie for $3.14. Also: cheap drinks!

Here are a few possible options for geeking out—and saving some cash—on Friday, 3.14.2014:

Boston
Boston.com recommends pie for breakfast at the Beacon Hill Hotel, where a slice sells for $3.14 on Friday, while the Salvatore’s, a local Italian chain, offers a selection of flatbread pizza pies for $3.14 that day.

Chicago
Check out the huge list of 3.14-themed promotions and deals at restaurants and bakeries in the Windy City rounded up at Chicago on the Cheap. Most feature a $3.14 price on pizza or pie, but there are also basic buy one slice of pizza, get one free offers.

Princeton, N.J.
New Jersey’s quaint college town takes March 14 seriously. Not only is 3.14 Pi Day, it’s also the day that longtime town resident, university professor, and all-around genius Albert Einstein was born. Accordingly, Princeton goes all out with an entire weekend honoring Pi Day and Einstein’s birthday, including free guided walking tours of Einstein’s neighborhood, a “Top Chef” pie-making competition, and a Rubik’s Cube demonstration.

St. Louis
Pi Pizza, with a handful of locations in Missouri and a sister branch District of Pi restaurant in Washington, D.C., is naturally host to a range of special Pi Day events and deals, including a promotion in which your second pizza is $3.14 after paying full price for the first.

Northeast
Based in Maine, with locations also in New Hampshire and Massachusetts, the Portland Pie Company is host to discounted pizza deals and a $3.14 pint special during lunch and happy hour.

Southeast
Your Pie, a restaurant chain with locations in Georgia, Florida, South Carolina, and Tennessee, is hosting its “fifth annual celebration of the circle” this Friday, with the base price of its customizable craft pizzas starting at $3.14.