In 1492, Columbus sailed the ocean blue! Here's to voyage and discovery, to setting off on grand adventures and finding new land you never knew existed! This Columbus Day greeting card is a fun and simple way to celebrate this national U.S. holiday. Send it today (especially to any of your Italian-American friends!). The world has come a long way since Columbus discovered there was a Pacific Ocean, and though we might think the world has been carefully mapped out-there is still so much to explore!