Public domain
Viterbo. Gate and Antigate of S. Pietro with the Palace of the Abbey of S. Martino (Now an Orphanage. 16th Century)
From the collection of Rijksmuseum, Amsterdam. Free to download, adapt and use — no permission needed.
Credit lineViterbo. Porta e Antiporta di S. Pietro col Palazzo dell'Abbazia di S. Martino (Ora Brefotrofio. Secolo XVI). 1908 - 1914. anonymous. Rijksmuseum, Amsterdam. Public domain.