This is the "Casa del Marquès" (Home of the Marquess) in El Masnou. You can see a picture here. I did the drawing late in the afternoon, sun was setting while I was finishing, so my colours were darker than what I drew. I also considered adding a wash of black watercolor after getting home, but I wasn't sure about how it would look like and decided to keep it as is.
I didn't get the perspective completely right, next time I draw some buildings (I still have one in queue for publication, Ca l'Aymà also in El Masnou) I should take a pencil and add some escape points and make it right.
Drawn with Winsor and Newton watercolor, straight with Staedtler Marsmatic in a pocket-sized Moleskine sketchbook.