Photo of Karim Aga Khan IV (real name Karim al-Husseini), the religious leader of the Nizari Ismailism, an Islamic religious community. Karim Aga Khan IV was an avid athlete and participated in the World Championships and Olympic Games as a ski racer. He is still considered one of the richest men in the world to this day. The Hahnenkamm race has been held on the Hahnenkamm in Kitzbuehel since 1931.