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Find more RMC Découverte documentaries on RMC BFM Play ▶ https://bit.ly/RMCDECOUVERTE If the Vatican has all the makings of a micro-territory, in less than 2,000 years, it has not only become a spiritual beacon for one billion three hundred million Catholics but also an exceptional treasure of world heritage. Everything was built around a capital location: the tomb of the apostle Peter. A modest tomb that will trigger a series of grandiose constructions at the new Saint-Pierre will be the largest church in the world. But its construction is a technical puzzle. How do you build a dome 42 m in diameter, culminating at more than 110 meters, the equivalent of a 30-story building? Behind all these wonders, lies a host of unsuspected technical challenges. Discover the secrets of the making of a megastructure with a unique history in the world: the Vatican #rmcdécouverte #documentary #reportage #Vatican #Rome #heritage