Presenting the 31st annual Pi Day, the mathematical holiday founded at the Exploratorium and celebrated by number lovers around the world. To honor the never-ending number 3.14159... (and Einstein's birthday), there are pi-themed activities, rituals, antics, and plenty of pie. Find out what's so special about this famous mathematical constant, and take your (decimal) place in the annual march to the Pi Shrine!
Enjoy pi-themed talks, activities and more, followed by plenty of free pie and a march to the Pi Shrine at The Exploratorium celebration of Pi Day, founded by Exploratorium physicist Larry Shaw. Pi Day is, not coincidentally, also the anniversary of Albert Einstein's birthday. All ages are welcome.