Located in the Vatican, St. Peter's Basilica was constructed from 1506 to 1626. It stands as a significant emblem of Catholicism and holds the distinction of being the largest church  in the world. In "Tools" series, the gorgeous baroque church domes are all fitted with the most commonly used hand sanitizer bottle caps in contemporary life, thus transforming the entire cathedral into a hand sanitizer bottle, and the audience can press out hand sanitizer for cleaning. The western classical architectural culture is combined with every-day objects in the era of globalization, resolving the classic and the contemporary in a humorous way.