This cherished Catholic church is well-known all around for its distinctive natural decoration: a live tapestry of ivy that utterly changes its façade. The building has become a live depiction of the Biblical Garden of Gethsemane thanks to the lush covering, therefore forging a strong link between spirituality and environment. From brilliant spring greens to rich fall reds, the ivy changes color and texture over the seasons, therefore dynamically altering the look of the church. This natural embellishment not only improves the visual attractiveness of the structure but also generates a microecosystem supporting local species and so promotes urban biodiversity. While letting the architectural details stay clear under the green canopy, the meticulous upkeep of the ivy guarantees that it improves rather than deteriorates the construction. Inside, the contrast between the conventional church interior and the rich outside produces a significant change from the natural to the spiritual domain. This chapel is a rare example of how architecture and nature could mix to produce a very significant spiritual environment since the ivy-covered walls have become so famous and draw people from all across the world.