The triquetra, also known as the Trinity Knot, is an ancient symbol composed of three interlocking loops, often enclosed within a circle. It has deep historical roots in Celtic and Norse cultures, symbolizing concepts such as life, death, and rebirth or earth, sea, and sky. In Christian iconography, the triquetra represents the Holy Trinity—Father, Son, and Holy Spirit—emphasizing unity and eternity. Its continuous, unbroken design conveys an eternal spiritual cycle, often used to signify interconnectedness and balance. The circle surrounding the loops strengthens its meaning, highlighting wholeness and infinite love. Frequently found in ancient manuscripts, such as the Book of Kells, and in modern jewelry or tattoos, the triquetra remains a powerful symbol of harmony and continuity. Whether embraced for its spiritual significance or admired for its elegant geometry, the triquetra continues to resonate across cultures as a timeless emblem of unity, eternity, and the sacred connection between all things.