A natural continuation of the Scala dei Giganti is the Scala d’Oro, so called for the rich decorations in white stucco and pure gold leaf on the vault, executed starting from 1557 by Alessandro Vittoria , while the frescoed panels, from the same period, they are the work of Giambattista Franco . It was built to separate the spaces dedicated to the doge’s private home, located to the north, from the courthouse, which is located to the south. [130] Despite the misleading presence of the coat of arms of the doge Andrea Gritti in the key of the arch, the golden staircase was built during the doges of the doges Lorenzo and Girolamo Priuli , who reigned between 1556 and 1567, designed by Jacopo Sansovino in 1555 and completed in two phases, first by Scarpagnino in 1559 and then under the stave by Sebastiano Venier . The arch with the Gritti coat of arms had been erected previously and overlooked a provisional wooden staircase, built during the Gritti stave starting from 1538 . Before Sansovino’s project was carried out in 1555 , architects such as Michele Sanmicheli and Andrea Palladio had already been consulted.