Before I forget, today I discovered the following:
Guernica - a famous painting by Pablo Picasso depicting attack on Basque City of Guernica by Germans in 1937. A timeless piece of art on war.
Louise Nevelson: A famous sculptor who redefined the roles of women in sculpture in 1950's
I also stumbled on Monteverdi's works but could not make much sense of music/operas. I should watch an Opera soon.