The Entrance to the Citadel of Cairo, from Egypt and Nubia, Vol.3 -
David Roberts
The Entrance to the North Transept, Burgos Castle, 1835 -
David Roberts
The Gate of Justice, Entrance to the Alhambra, 1833 -
David Roberts
The Great Sphinx and the Pyramids of Giza, from Egypt and Nubia, Vol.1 -
David Roberts
The Great Temple of Abu Simbel, Nubia, from Egypt and Nubia, Vol.1 -
David Roberts
Harborough Castle, Yorkshire - Thomas Rowlandson
The Colosseum Rome - William Leighton Leitch
Temple of Philae - Henry Holiday
The Remains of the Temple of the Sun at Baalbek - Carl Haag
Portraits of Roman Emperors 3 - Henry R. Cook
Great Temple at Selinunte - Luigi Mayer
Ruins of the Church of St. John, Sabaste, 1839, plate 43 from Volume I of The Holy Land, engraved by Louis Haghe 1806-85 pub. 1842 - David Roberts
Egyptian Ruins - Johann Jakob Frey
Portico of the Temple of Edfu, Upper Egypt, from Egypt and Nubia, Vol.1 - David Roberts
The Dromos or Central Hall of the Great Temple of Amun, Karnak, from Egypt and Nubia, Vol.2 - David Roberts
Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the 
