Go on a Scavenger Hunt and discover all of the public art features in celebration of World Art Day on April 15. The Scavenger Hunt will be open from 10 a.m. to 3 p.m. on Friday, April 15 (World Art Day) and Monday, April 18 (Patriots Day). Visit Customer Service for an Art Map. There will be a box at each feature with a sticker to collect. Return the completed map to Customer Service for a special gift, while supplies last. Perfect for all ages!