Renaissance means "rebirth." So, why is this time in history named that? Remember that the early part of the Middle Ages was ruled by the feudal system. A great majority of the people during that time were peasants or serfs who could not read or write. They were too busy working! So the emphasis on education that the Greeks and Romans had was mostly lost. But, during the Renaissance, those beliefs were "reborn". Education, including art, architecture, and science became important again.
Read the following article that gives more information about the start of the Renaissance.
Two of the most influential Renaissance men were Leonardo da Vinci and Michelangelo.
Watch the following videos to learn more about these talented men.
Finally, read this article that explains some of the changes that were happening with architecture during the Renaissance.