The center of Madrid, and a big tourist trap, I do not recommend spending much time in Sol if you can avoid it, though it is definitely worth a gander. Ultimately there are two main reasons (besides seeing the plaza of Puerta del Sol) that a sane person would venture into this barrio.
El Riojano, Calle Mayor 10, 28013.
This is a sweet shop that opened in 1854 and continues to use many of the same recipes from over 100 years ago! Lots of traditional Spanish candies are sold here such as turrón and mazapán. There is also a little tea shop hidden in the back that you mustn’t miss!
Chocolatería San Ginés, Pasadizo San Ginés, 5, 28013.
Go here to try the traditional treat of churros y chocolate.
Plaza Mayor: This Plaza is certainly a tourist trap, but also definitely worth walking through on your tour of Madrid. The buildings in the square are beautiful and old. In the wintertime there is a big Christmas market in Plaza Mayor, and a huge nativity scene that people line up to see. You will see many stands selling figurines and boards with moss growing on them. These are for people to build their shop window or home’s nativity scene on. There is a great free walking tour of Madrid that begins in this plaza.