What makes a real French croissant?

Croissants are a staple in French pastry. A fresh coffee and a croissant create the perfect breakfast combination. So, how are perfect French croissants made? How did they become so popular in France, and how were they invented in the first place? Legend has it that the croissant wasn't even invented in France. To answer these questions, we went to Paris, France, and visited a classic boulangerie – a French bakery – to find out.