The Spanish capital is adorned in white and yellow, the Vatican's colors, to welcome the Pontiff. In addition to over 100,000 flowers already distributed throughout streets and squares, "large floral signs" bearing the name Leon XIV have recently been added, now visible in locations such as the Sabatini Gardens, Plaza de España, and Plaza de San Juan de la Cruz. A total of 13 compositions have been arranged.

Jose Luis Martínez-Almeida, the mayor of Madrid, emphasized that these elements aim to ensure the capital receives the Holy Father "under the conditions this visit deserves." Meanwhile, Antonio Morcillo, deputy director general of Parks and Gardens for the City Council, explained that the installation of these giant letters completes the urban decoration and was carried out under a very tight deadline.

The creation of these structures presented a challenge for municipal services, which received the information in late February. Morcillo detailed that the flowers used, varieties of limonium and paniculata in white and yellow, have been treated with glycerin to ensure their durability despite the heat. The vertical letters in the Sabatini Gardens, oriented towards the Royal Palace, use preserved flowers, while the ground-level compositions, featuring petunias (calibrachoa), are designed for aerial viewing.

These floral arrangements, which may remain installed beyond June 9th, are part of a broader decorative effort that includes banners and vinyl-wrapped buses. The City Council considers the papal visit a historic event with significant international impact and a large influx of visitors.