Word, sentence, or verse that reads the same backwards as forwards (ignoring word breaks and punctuation). Madam, in Eden, I'm Adam. Ten animals I slam in a net.
The Pillars of Hercules represent the promontories of Gibraltar and Ceuta. The shield represents the regions of Castile, Léon, Aragón, Navarre, and Granada. Effective date: 18 December 1981.