Guernica …

… at the Reina Sofia Museum. A very long line to enter from the front, but it moved quickly, and we were soon led around to the back and entered very quickly.
We walked up two flights of stairs and were immediately there, with a relatively manageable crowd. One of the greatest works of modern art, by Picasso, directly in front of us. It depicts the German attack on the Spanish city Guernica (late 1930s).