The Romanesque and Gothic eras saw a return to grand architectural achievements since the Ancient World.  The Romanesque style originated in Italy, the Gothic in France, yet both styles spread throughout Europe at a rapid pace. Compare and contrast the Romanesque and Gothic building techniques:
Describe the Romanesque style of architecture, including artistic decorations within.  What specifically reminds you of Ancient Rome?  How did these cathedrals encourage pilgrimage?
Compare that with the Gothic style: how are the two styles visually different? What specific building techniques were used in Gothic architecture, and how did they affect the overall look of cathedrals?