"Ad utrumque". This is the inscription carried by the famous lion represented on a tile panel above the main entrance to the Alcázar.
It is the abbreviated version of the motto “Ad utrumque paratus”, from Virgil's “Aeneid”, which could be translated as “prepared for one and for the other” or “prepared for everything”.

The panel shows a lion with an open royal crown, who bears a cross on one of his legs and perches two others on a spear, all framed by a cord with knots at the corners.