This building remains the only surviving civil architectural item for public use of the Early Middle Ages.

The decoration on top depicts the Victory Cross, symbol of Asturias.

This public fountain, which belongs to Oviedo Town Hall, is erected over a spring.

It has a shape of a vaulted chapel and is crowned by the royal ensign of the Victory Cross.

Below the Asturian Cross, two inscriptions remain: (Hoc Sign) O Tvetvr Pivs, Hoc Signo Vi (Ncitvr, Inimicvs) "With this sign the pious are protected, With this sign you shall defeat the enemy"(Signvm Salvtis Po) Ne Domine In Fonte (Ista Vt Non Permitas) Introire Angelvm Percv (Tientem)"Lord, put the sign of the salvation on this fountain to not allow hitting angel to enter"