Raise a glass to Christopher Columbus
While he did not technically "discover" America, he was instrumental in bringing it to the attention of Europe. In any case, Columbus serves as a symbol of Western Civilization coming to this country, for which reason he is both celebrated and loathed, depending on one's opinion of Western Civilization.
The United States has become a beacon of freedom to the rest of the world. And without the New World, the Old World would have ended up being a much worse place than it is.