pi10k+ 

A walk along the first 10,000 digits of pi
Each step uses a digit of pi to decide which direction to go in.
Separating data and code from Richard's original project
http://turtlestitch.org/users/Richard/projects/pi10k

READ MORE:
Pi Day: pi transformed into incredible art – in pictures
https://www.theguardian.com/science/alexs-adventures-in-numberland/gallery/2014/mar/14/pi-day-pi-transformed-into-incredible-art-in-pictures
Visualizing the Art in Pi
https://www.visualcinnamon.com/portfolio/the-art-in-pi