In March my husband and I are traveling to Panama City for 5 days with another couple. We have tours planned for the Canal and Rain Forest but we were going to visit Colon on our own. We wanted to go to Colon for one day to see the Fort and shop. We heard that Colon has the 2nd largest duty free shopping in the world. After reading some of the other comments I'm not sure about the shopping. Do we need our passports to get into the shopping area? We usually leave our passports in a safe and just travel with a copy or we use our drivers lic for Id. Also, is it true we are limited on what we can buy? We like to collect local art work from the countries we visit. Will we be able to purchase mask, paintings or crafts in Colon?