A poor Indigenous Mexican man, an Aztec convert to Catholicism, who reported four separate apparitions of Mary on Tepeyac Hill between December 9 and December 12, 1531.

What did Mary ask Juan Diego to do?

To tell the local bishop to build a shrine to her on the site of the apparitions — a request the bishop initially doubted until Juan Diego returned with a sign that convinced him.

What is the image on the tilma?

A depiction of Mary, imprinted on Juan Diego's cloak (tilma), that the Catholic Church regards as being of miraculous origin — it remains on public display at the Basilica of Our Lady of Guadalupe in Mexico City.

Is belief in the Guadalupe apparitions required of Catholics?

No — like all reported Marian apparitions, Guadalupe is classified by the Church as "private revelation," which Catholics are free, but not doctrinally obligated, to believe. The Church has, however, formally approved devotion to it, and it holds a central place in Mexican and broader Latin American Catholic life.

Our Lady of Guadalupe

Four appearances in four days

The story unfolds quickly. Tradition holds that Mary appeared to Juan Diego on Tepeyac Hill, near what is now Mexico City, on December 9, 1531, asking him to request that the bishop build a shrine there in her honor. Juan Diego brought the message, but the bishop — reasonably enough — wasn't convinced by a poor man's report of a vision. Mary appeared to Juan Diego again that same day, and again the following day, each time sending him back with the same request, until the bishop finally asked for a sign he could not dismiss.

The tilma image of Our Lady of Guadalupe, 1531, Basílica de Guadalupe, Mexico City — public domain.

A sign the bishop couldn't explain away

On December 12, the final apparition, Mary instructed Juan Diego to gather Castilian roses — flowers not native to the region and out of season in December — from the top of the hill and carry them to the bishop in his cloak. When Juan Diego opened the cloak in the bishop's presence, the roses fell out, and the cloak itself was found bearing an image of Mary that had not been there before. That cloak, known as the tilma, is the same image displayed today at the Basilica of Our Lady of Guadalupe, and it was that physical, unexplained sign — not the earlier reports of apparitions alone — that led the bishop to act.

What the image itself shows

The tilma depicts Mary standing on a crescent moon, wrapped in a star-covered mantle, hands folded in prayer, supported by an angel below — a visual language that drew on both Christian symbolism and imagery already familiar to the region's Indigenous population, which is part of why the image resonated so immediately and so widely. Within years of the apparitions, conversion to Catholicism across the region accelerated dramatically, a shift many historians and the Church itself connect directly to the impact of the Guadalupe image.

A private revelation with an outsized legacy

Like all Marian apparitions, Guadalupe falls under what the Catholic Church calls "private revelation" — devotion the Church has approved and encourages, but doctrine no Catholic is formally required to accept, as distinct from the public revelation contained in Scripture. That distinction hasn't diminished its influence. Our Lady of Guadalupe was declared patroness of the Americas, and her feast on December 12 remains one of the most widely celebrated Marian feast days anywhere in the Catholic world — a devotion that began with one man, one hillside, and a cloak that convinced a bishop who had every reason not to believe him.