This was the episode they crossed over with Hey Riddle Riddle, right? King's College Chapel is the oldest surviving building within the College site and perhaps the most iconic building in Cambridge.From a Gothic chapel in Paris to a hotel in Mexico City, take a look at some of the most beautiful stained glass windows in the world. That was the only way to get natural light and ventilation into a basement. Later, they became required for emergency fire exits. The last building of Louis XIV.