Revelers run with the bulls through the streets of Pamplona during Spain's best-known bull-running festival.
The festival, created to mirror Spain's La Tomatina festival, was hosted in Sutamarchan, north of Colombia's capital Bogota, for its 15th edition this year after many years of suspension.
The fiery spectacle of Ireland's Bealtaine festival marks summer's arrival with blazing bonfires, captivating performances, and ancient atmosphere.
