Updated: October 10, 2010

The first Columbus Day was celebrated in 1792, in honor of Christopher Columbus landing in the New World on October 12, 1492. The U.S. made it an official holiday in 1937. For many, the holiday marks the achievements of Columbus and Italian-American heritage, for others, it's more controversial.

Over the past few decades, historians revealed new evidence about Columbus' exploration and treatment of native people, which has resulted in new traditions and attitudes regarding the holiday. Native Americans and other groups protest the celebrations, denouncing the explorers hero status.

Did Columbus really discover America? Did Marco Polo really introduce pasta to Italy? Take the quiz to test your knowledge of great explorers and watch our special segment below.