The World's Biggest Post-It Note Mural

Call it a giant victory in a microscopic niche: With his latest piece of public art in Madrid, muralist Eduardo Zamarro claims to have created the world's "biggest" stop-motion video and mural made entirely of Post-it notes.

One million of the sticky reminders gave their lives to create Zamarro's "Wall of Happiness," a 15-day ordeal involving the constant switching of color-coded notes to paint out a story of... I'm not sure what exactly, but it definitely involves Coke. The Wall commemorates the beverage giant's Madrid-based "Instituto De La Felicidad," or "Institute of Happiness," which was "born in 2007 to investigate and disseminate knowledge about happiness," according to a translation of its Facebook page.