Enjoy two (2) 30 minute drop-in sessions for free-build fun at Play-Well's Marin Activity Center.  With over 100,000 LEGO elements to work with, children can build anything that they can imagine!  The friendly staff will help children find that elusive special piece, solve that thorny building problem or find inspiration to fuel their creativity.  Located at 216 Greenfield Avenue, San Anselmo.