Francis I of France —
Photo Credit: By Jean Clouet, Public Domain, https://commons.wikimedia.org/w/index.php?curid=30275305

Eleanor of Austria —
Photo Credit: By Joos van Cleve - Kunsthistorisches Museum Wien, Public Domain, https://commons.wikimedia.org/w/index.php?curid=3803448

Flag of Austria —
Photo Credit: By Bundesministerium für Landesverteidigung - Public Domain, https://commons.wikimedia.org/w/index.php?curid=342954

Monastery of Yuste — In 1811 by Alexandre de Laborde
Photo Credit: By François Liger - Alexandre de Laborde (1811) - Public Domain, https://commons.wikimedia.org/w/index.php?curid=67930004

Flag of Spain — cropped to square
Photo Credit: Public Domain, https://en.wikipedia.org/w/index.php?curid=33285608

Royal Seminary of Bergara —
Photo Credit: https://www.laboratorium.eus/en/what-royal-seminary-bergara

Juan José Elhuyar —
Photo Credit: http://www.larramendi.es/vcilustrados/i18n/consulta_aut/registro.do?id=3017

Tungsten (wolfram) — Tungsten rods with evaporated crystals, partially oxidized with colorful tarnish. Purity 99.98 %, as well as a high pure (99.999 % = 5N) 1 cm3 tungsten cube for comparison.
Photo Credit: By Alchemist-hp (talk) (www.pse-mendelejew.de) - Own work, FAL, https://commons.wikimedia.org/w/index.php?curid=10424635

Fausto Elhuyar —
Photo Credit: By Biblioteca Nacional de España - http://www.bne.es/, Public Domain, https://commons.wikimedia.org/w/index.php?curid=3065453

Vanadium — Crystal-bar vanadium, showing different textures and surface oxidation; 99.95%-pure cube for comparison
Photo Credit: By Alchemist-hp (pse-mendelejew.de). - Own work, FAL, https://commons.wikimedia.org/w/index.php?curid=14948517

University of Alcalá — The plateresque facade (R. Gil de Hontañón, 1543) of the most recognized building of the university
Photo Credit: By FDV - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=81436162