Pi is used for many things, as a mathematical constant it is the ratio of the circumference of a circle to its diameter, it is approximated to 22/7 (Also when Pie approximation day occurs 22 July).
Pi is both an infinite and an irrationtional number.
Pi day is celebrated 14 March - 3/14.
The first Pi day was celebrated in 1988, organised by Larry Shaw who conducted a public march in a circular space consuming fruit pies.
The state of Indiana almost created a legislation about pi in 1897.
Pi day is also Einstien's birthday - happy birthday :)
Aussie's love the hand held meat pie, and it is a part of Australian culture, whereas a pie in other countries is much larger and often a dessert.
It is believed the Egyptians may have been the first to make pies.
To meet national food standards a meat pie must contain at minimum of 25% "meat flesh".
Pies and pi are a regular in pop culture appearing in many movies, books, tv shows and as part of the vernacular.
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Please note attributes mention dangerous climbing - it is not a 'climb' but maneuvering around this area can be quite tricky, hence why it may not be appropriate for kids also. Please ensure anyone you take with you and your safety at all times.