Many cities have a special attraction or two or ten, but Paris has hundreds, maybe thousands. For instance, in 1570 the first Marché de Noël took place in Strasbourg, but today in Paris there is a splendid Marché de Noël, bringing together artists and artisans selling unique holiday gifts. In Paris there are also excellent computer scientists, who have developed a technique that uses anisotropic triangles (triangles with sides that vary in length depending on their direction) to make 3-D images. The technique is a practical application of the Nash embedding theorem, which was named after the American mathematician John Forbes Nash, Jr. Which is the most visited museum in the world? Where can you find the best church organs? Which is the most spectacular and expensive street in the world? Where is located an Egyptian obelisk from the time of Ramses the Great? All these questions and hundreds more have their answers in this book. The over 200 photos, taken in October 2013, with their detailed and attention-grabbing explanations, irrefutably show why so many people call this city mon amour. Paris has a special place under the Sun (even during particularly intense Solar storms, which can penetrate Earth's magnetosphere, allowing charged particles to create problems for the Earth's technological infrastructure). For this reason, any booklover, no matter from what corner of the world, will certainly find, in this book of general interest, numerous fascinating and unforgettable images and facts.