The Museum of Church art in the walls of the Cathedral in the square of Almoina in Valencia. This Museum is the oldest Museum in the city. Its Foundation dates back to the year 1761. The Museum of Church art, also known as the Cathedral or Diocesan Cathedral, contains a large collection of the sacred relics, mainly relics of many saints. One of the most important religious sites of the Museum are relics of the Holy Martyr Vicente, who lived in the 4th century. In the Cathedral are the remains of a Patriarch, and many other bishops, the relics of many saints and martyrs, which are not shown to the public. In addition, there are papal relics and heirlooms of the Royal family, princes and prelates, as well as documents, articles of clothing. The Museum collection also includes a small wooden images, paintings and silverware on ecclesiastical subjects.

The Museum of religious art is also famed for works by major artists that are here. The masterpieces of masters such as Goya, Poggibonsi, Selini and pictures of Vicente Massive and Juan de Juanes. In sufficient quantity also presents paintings by Valencian artists of the school of the XV-XVII centuries. The pride of the Museum are the paintings of Goya "Farewell San Francis Borgia" and "Convicted".

But the greatest value is the Cup, which is recognized by the Pope and the whole Catholic Church is the Holy Grail. The Cup is to the right of the entrance to the Cathedral, in the chapel of Santo Kalis. The bowl is on a special pedestal, surrounded with beautiful bas-reliefs, made by Italian craftsmen. The Holy Grail annually attracts huge number of pilgrims and tourists.