St. Paul’s Cathedral is the most important cathedral in London and the mother church of the Diocese of the city. It sits on Ludgate Hill, the highest point of the City of London. Thanks to the principal dome at 365 feet high (111 m) this cathedral was the tallest building in London from 1710 to 1962. Today, this dome is still among the highest in the world. Facing this imposing building and the richness of the gold ceilings, ‘Dome’ is a mirror in a bright polished brass.