Valencia Cathedral
Historic siteFor 357 years, worshippers prayed beneath a painted dome without knowing what lay hidden above it. A Renaissance masterpiece — commissioned by the same cardinal who would later become the notorious Pope Alexander VI — was covered over in 1647 and only rediscovered by chance in 2004.
Angels hidden behind a Baroque dome
In 1476, Cardinal Rodrigo de Borgia — the same Borgia who would later become one of history’s most controversial popes as Alexander VI, and whose family’s own baptismal church stands in Gandia — commissioned Italian artists Paolo da San Leocadio and Francesco Pagano to paint the space behind the high altar. What they created was a striking fresco of twelve angels playing musical instruments against a starry sky, one of the earliest and finest examples of Renaissance painting in Spain. In 1647, during a Baroque renovation, an ostentatious new dome was built directly over the frescoes, sealing them away completely. Nobody saw them again until 2004, when restoration work stumbled onto the paintings entirely by chance — more than three and a half centuries after they’d vanished from view.
The cup at the centre of the world’s oldest cold case
The cathedral’s other famous treasure has never been out of sight, and has generated far more debate. The Holy Chalice, kept behind glass in its own dedicated chapel, is a polished agate cup that some scholars date to the 1st century BC or 1st century AD, crafted somewhere in the Eastern Mediterranean — matching, by tradition, the vessel used at the Last Supper. King Alfonso the Magnanimous gave the relic to Valencia Cathedral in 1437, and it has stayed here ever since, used in ceremonies by Popes John Paul II and Benedict XVI on their visits to the city. The Vatican has never officially pronounced on its authenticity one way or the other — but the cup itself, unlike most claimed relics of its kind, has actually been forensically dated, and the results are consistent with an object genuinely old enough to have existed in Christ’s lifetime.
Built on a mosque, on a Visigothic church
The cathedral rose on the site of Valencia’s former mosque, itself built over an earlier Visigothic Christian church — consecrated in 1238 after the Reconquista.
Three styles, one building
Gothic, Romanesque and Baroque elements sit side by side, the result of continuous modification across nearly eight centuries.
An alabaster setting
The Capilla del Santo Cáliz houses the chalice beneath a Gothic dome and an alabaster altarpiece, one of the cathedral’s most visited corners.
Now visible again
The 1476 frescoes, restored since their 2004 rediscovery, can now be seen by visitors — a Renaissance masterpiece that spent longer hidden than on display.
Frequently asked questions
Is the Holy Chalice really the Holy Grail?
Nobody can say for certain. The Vatican has never officially confirmed its authenticity, though forensic dating supports the agate cup’s origin in the right historical period, and the relic has been used ceremonially by recent popes.
Why were the frescoes hidden for so long?
A 1647 Baroque renovation built a new dome directly over them, and they weren’t rediscovered until restoration work in 2004 — 357 years later.
Who commissioned the frescoes?
Cardinal Rodrigo de Borgia in 1476, decades before he became Pope Alexander VI — the same Borgia family connected to Gandia’s own collegiate basilica.
What stood on this site before the cathedral?
A mosque, itself built over an earlier Visigothic Christian church; the current cathedral was consecrated in 1238 following the Christian reconquest of Valencia.
Explore more of the Costa Valenciana
Valencia Cathedral is one of many destinations on the CostaMap interactive map — browse beaches, villages, castles and viewpoints across the whole coast.
This place is part of our Costa Valenciana Map: Valencia, Gandia and the Albufera — see every town, beach and cove we have mapped on that coast.
How this page is maintained. CostaMap is written and maintained by an AI editorial system built by ebizapple. Facts are drawn from primary sources — town halls, museums, port and heritage authorities and the Spanish archaeological record — and where sources disagree, we say so rather than smooth it over. Photographs marked as ours are taken on location. This page was last reviewed on 10 August 2026. Opening hours, prices and transport change; check the official source before you travel.