This is a mobile application with which visitors can explore and learn in a playful way about the history of the city of Valencia and its relationship with the emblematic Holy Grail, recognised by the Vatican and kept in the Cathedral.

Visitors must solve different puzzles using their mobile device, which take them through a total of 11 historic locations across the city. From the Patriarch's Museum to the Royal Gardens, passing through the Church and Palace of the Temple, the Museum of Fine Arts, the Church of San Martín Obispo and San Antonio Abad, to the Valencia Silk Exchange and the Cathedral of Valencia itself.

After completing this experience, the user obtains a code that can be exchanged for a set of official items from the experience at the Valencia Tourist Office.

The application "On the trail of the Holy Grail" was awarded a prize at the 26th edition of the FITUR Active Tourism Competition and is a project promoted by the Valencia City Council and the Visit Valencia Foundation to mark the celebration in 2021 of the Jubilee Year of the Holy Grail, which is held every five years in this city.