The Túnel de las Sorpresas (Tunnel of Surprises) is a fountain in Lima’s Circuito Mágico del Agua (Magic Water Circuit), opened in 2007 at a cost of $13 million. Built within the Parque de la Reseva, a historic 19-acre (eight hectare) park, the series of 13 illuminated fountains has since proved a successful addition to Lima’s many attractions. Upon its construction, the Magic Water Circuit made it into the Guinness Book of World Records as the world’s largest water fountain complex in a public park. Some of the fountains are even interactive, such as the ever-popular Laberinto del Ensueño (Maze of the Dream). Getting to the center of the “maze” is more a matter of timing than navigation; a mistimed stride can land you right on top of a suddenly spewing jet of water.