This is the Sagrada Familia in him. A long-term project that has for four decades and is nearing completion. A house that develops the environment around a deep well of light. An incredible maze with no casual visitor can not assume the scale without a methodical tour provided by the master of the house, Xavier Corbero, 74, sculptor. The cave has attracted the filmmaker Woody Allen, who used it as a backdrop for several scenes of the film Vicky Cristina Barcelona, released in 2008. A perpetual construction Xavier Corbero thought this place to instinct, "a few lines on single sheets of graph paper. "Without an architect above all, lest he be weary of a proposal that would not itself given birth. In 1969, in Esplugues de Llobregat, near Barcelona, he bought a plot on which languished hovels of the seventeenth century. It retains some old parts and demolished the rest. Thus began his lifelong project. The plot is riddled with caves and underground (Esplugues in Catalan), once used by the Romans.