A painting can be out of copyright and thephotograph of it can still be protected.

Sacrifice on the Campus Martius, from "Speculum Romanae Magnificentiae"

Anonymous

1553 · Engraving

Sacrifice on the Campus Martius, from "Speculum Romanae Magnificentiae"

Anonymous

16th century · Engraving

Sacrifice on the Campus Martius, from "Speculum Romanae Magnificentiae"

Anonymous

16th century · Engraving

Colonne Traiane, from "Les Plus Beaux Monuments de Rome Ancienne ou Recueil des plus beaux Morceaux de l'Antiquité Romaine qui existent encore"

Jean Barbault (d. 1762)

1761 · Etching

Map of the Campus Martius, showing the physical characteristics of the site, plate 1 from "Il Campo Marzio dell' Antica Roma, Opera di G.B. Piranesi socio della reale società degli antiquari di Londra" (The Campus Martius of Ancient Rome, the Work of G.B. Piranesi, Fellow of the Royal Society of Antiquaries, London)

Giovanni Battista Piranesi (d. 1778)

1762 · Etching

Map of the neighborhood containing the remains of the Theater of Pompey...[site map and relevant fragments of the Severan Marble Plan], plate 16 from "Il Campo Marzio dell' Antica Roma, Opera di G.B. Piranesi socio della reale società degli antiquari di Londra" (The Campus Martius of Ancient Rome, the Work of G.B. Piranesi, Fellow of the Royal Society of Antiquaries, London)

Giovanni Battista Piranesi (d. 1778)

1762 · Etching

Maps of the ruins of the old city and of the Campus Marius [four maps showing its evolution], plate 3 from "Il Campo Marzio dell' Antica Roma, Opera di G.B. Piranesi socio della reale società degli antiquari di Londra" (The Campus Martius of Ancient Rome, the Work of G.B. Piranesi, Fellow of the Royal Society of Antiquaries, London)

Giovanni Battista Piranesi (d. 1778)

1762 · Etching

Remains of the Basilica of Gaius and Lucius, plate 14 from "Il Campo Marzio dell' Antica Roma, Opera di G.B. Piranesi socio della reale società degli antiquari di Londra" (The Campus Martius of Ancient Rome, the Work of G.B. Piranesi, Fellow of the Royal Society of Antiquaries, London)

Giovanni Battista Piranesi (d. 1778)

1762 · Etching

Remains of the Portico of Gaius and Lucius, plate 15 from "Il Campo Marzio dell' Antica Roma, Opera di G.B. Piranesi socio della reale società degli antiquari di Londra" (The Campus Martius of Ancient Rome, the Work of G.B. Piranesi, Fellow of the Royal Society of Antiquaries, London)

Giovanni Battista Piranesi (d. 1778)

1762 · Etching

Some sepulcral monuments, which are listed in the index of the ruins of ancient Rome and the Campus Martius, from "Il Campo Marzio dell' Antica Roma, Opera di G.B. Piranesi socio della reale società degli antiquari di Londra" (The Campus Martius of Ancient Rome, the Work of G.B. Piranesi, Fellow of the Royal Society of Antiquaries, London)

Giovanni Battista Piranesi (d. 1778)

1762 · Etching

View of the crane with which Pope Clement XI, in 1705, raised the column and base of the Apotheosis of the Emperor Antoninus Pius from the ruins of the Campus Martius, plate 31 from "Il Campo Marzio dell' Antica Roma, Opera di G.B. Piranesi socio della reale società degli antiquari di Londra" (The Campus Martius of Ancient Rome, the Work of G.B. Piranesi, Fellow of the Royal Society of Antiquaries, London)

Arnold van Westerhout (d. 1725)

1762 · Etching

Map of Rome and the Campus Martius, bound with "Vedute di Roma" (Views of Rome), part I

Giovanni Battista Piranesi (d. 1778)

ca. 1774 · Etching