The Venus of Willendorf Figurine Is Roughly 30,000 Years Old

Filippo Brunelleschi's experiments and Leon Battista Alberti's 1435 treatise gave painters a method for creating realistic depth on a flat surface.

Despite producing around 2,000 works, Van Gogh gained little recognition before his death in 1890.

Vincenzo Peruggia took the painting, and it was missing for more than two years. The theft made the portrait far more famous.

Teenagers found the painted cave in southwestern France in 1940. Its walls hold hundreds of animal images, including horses, deer and bulls.