Not only this street, but the whole district is every shopaholic's haven. Lined with numerous shops, you can find everything from alternative and modern fashion to skate shops and tattoo saloons. If you fancy something to eat, you can hop into some of the many hip eateries and cafes nearby.
Wikipedia https://en.wikipedia.org/wiki/Calle_de_Fuencarral
Address 5 Calle de Fuencarral, Madrid 28004, Spain
Coordinates 40°25'12.758" N -3°42'5.678" E