1. "Les Demoiselles d'Avignon" (1907): This influential painting marked Picasso's departure from traditional figurative art and is considered a groundbreaking work of Cubism. It depicts five nude women in a brothel in Avignon, France.
2. "Guernica" (1937): Painted in response to the Nazi German bombing of the Basque town of Guernica during the Spanish Civil War, this monumental black-and-white mural is a powerful anti-war statement and one of Picasso's most politically charged works.
3. "The Old Guitarist" (1903-1904): This early work from Picasso's Blue Period is characterized by its somber palette and portrays a melancholic, blind street musician. It reflects the artist's personal struggles and emotional state during that time.