The bilingual inscription in Portuguese and Javanese reads, "The project of rehabilitating the Umbul Binanun Tamansari, performed with the Apollo Calouste Gulbenkian Foundation, was inaugurated by S. Exa. Sultan Hamengku Buwono X of Yogyakarta, and Dr. Jose Blanco, administrator of the Calouste Gulbenkian Foundation (Portugal), on 22 August 2004."