- Jul 24 American explorer Hiram Bingham discovers Machu Picchu, the Lost City of the Incas
- Aug 21 "Mona Lisa" stolen from the Louvre by Vincenzo Perugia; recovered in 1913
- May 30 1st Indianapolis 500: Ray Harroun driving a Marmon Wasp for Nordyke & Marmon Company comes out of retirement, wins inaugural event; average speed: 74.602 mph (120.060 km/h)
Ishi, considered the last Native American to make contact with European Americans, emerges from the wilderness of northeastern California.
On August 29, 1911