50 vogels – a project to print 50 birds each with 16×16 LEGO pieces. Made by Roy Scholten and Martijn van der Blom, 2018. Prints are available to buy, and a book is coming in October. More info available here.
Most ASCII-converters work with blocks, but this one focuses on lines and structures. It was made by Xuemiao Xu, Linling Zhang and Tien-Tsin Wong in 2010. The comparison at the end is between an artist’s work (a) and their software (b). More info and images here.