A green wall in a Spanish hospital improved self-reported psychological well-being for 555 patients, visitors, and employees. Additionally, the hospital received enhanced media coverage due to the green wall with an estimated value of at least $220,000 USD, six times the installation costs of the wall.
Pérez-Urrestarazu, Luis, Ana Blasco-Romero, and Rafael Fernández-Cañero. “Media and social impact valuation of a living wall: The case study of the Sagrado Corazon hospital in Seville (Spain).” Urban Forestry & Urban Greening 24 (2017): 141-148. https://doi.org/10.1016/j.ufug.2017.04.002
