Duomo, Pisa Italy - Gallileo is believed to have formulated his theory of pendulum movement by watching the swinging of an incense lamp inside the nave. The original lamp, plainer and simpler is kept in the nearby Camposanto.
Interior of Notre Dame Cathedral in Paris, Awesome Artworks! ☜♥☞ Notre Dame de Paris was among the first buildings in the world to use the flying buttress (arched exterior supports). This wonderful vertical panoramic created from six photos.