Palazzo Alicorni is a reconstructed Renaissance building in Rome, important for historical and architectural reasons. The palace, originally lying only a few meters away from Bernini's Colonnades in St. Peter's square, was demolished in 1930 in the wake of the process of the border definition of the newly established Vatican City state, and rebuilt some hundred meters to the east. According to the stylistic analysis, his designer had been identified as Giovanni Mangone, a Lombard architect active in Rome during the 16th century.