The word azulejo stems from Arabic roots, meaning ‘small polished stone’. Azulejo is a form of Spanish and Portuguese painted tin-glazed ceramic tilework. During the last couple of centuries, the use of azulejos exploded. Today, it is common to see them decorating churches, monasteries, palaces, and regular homes. They are also used extensively in interior decoration.
Originally they were fairly simple structures cut into geometric shapes in neutral tones, getting influence later on from mythological scenes and different historical events like scenes from the lives of saints or the Bible.