The dawn at Lagoon of Mucubají sequence was filmed in Mérida, Venezuela with 2ºC temperature. The Palacio de Oriente sequence was filmed in Madrid while summer temperatures soared to 40ºC.
Actors Guillermo Garcia, Ignacio Montes, Hilda Abrahamz, Carolina Torres and Aroldo Betancourt went through intensive training in tango dancing before shooting the film.
Venezuelan actress Arlette Torres, a resident of Madrid, took Japanese lessons before shooting began to play the role of Valentina.