Corpus Christi, also known as the Feast of the Most Holy Body of Christ, is a religious holiday in Portugal and is celebrated with great reverence and enthusiasm. The holiday, which is deeply rooted in Catholic tradition, revolves around the celebration of the Eucharist and is held annually on the first Thursday after Trinity Sunday, which is about 60 days following Easter. It is a significant event in the Catholic calendar that epitomizes the transubstantiation of bread and wine into the Actual Body and Blood of Christ.

In Portugal, the holiday of Corpus Christi is marked by grand processions and festive events. Towns and cities across the country are swathed in beautiful decorations, and streets are often adorned with flower carpets and altars. The eucharistic procession is indeed the highlight of the day, where the consecrated host, displayed in a special monstrance, is borne through the streets accompanied by priests, clergy, and worshippers singing hymns and praying.

Despite the lively and joyful procession, Corpus Christi is a solemn day of reflection and adoration in Portugal. Many people attend Mass and participate in Eucharistic Adoration. Traditional foods associated with the holiday are consumed, including 'pão-por-Deus', a small bread roll traditionally baked for this occasion. The celebration of Corpus Christi showcases Portugal's deep Catholic roots and the country's commitment to preserving age-old traditions and customs.