Nice! Today, March 19th from 10am to 6pm, you can enjoy FREE admission to Discovery Gateway downtown! There is no coupon required for free entry. Just let them know you are there for the ZAP Free Day.
Plus, it looks like if you go today and you decide to purchase a family membership, you will receive $10.00 off!
All of the details about this free day can be found on the Salt Lake County ZAP site.
(Thanks Utah Deal Diva)