Italy, Lazio, Rome, tourists walking up Via Sacra toward the Arch of Titus on Velian Hill.

Italy, Lazio, Rome, tourists walking up Via Sacra toward the Arch of Titus on Velian Hill.

Italy, Lazio, Rome, Detail of the Arch of Constantine.

Italy, Lazio, Rome, The Arch of Constantine.

Portugal, Estremadura, Lisbon, Praco do Comercio, Arco da Rua Augusta.

Spain, Extremadura, Merida, Los Milagros Aqueduct built by the Romans in the first century BC.

Spain, Extremadura, Merida, Trajans Arch.

Spain, Extremadura, Merida, Los Milagros Aqueduct built by the Romans in the first century BC.

Spain, Extremadura, Merida, Los Milagros Aqueduct built by the Romans in the first century BC.

Spain, Extremadura, Olivenza, Archway in typically narrow street.

Formal gardens with Wooden Gazebo and fountain beyond.

Spain, Extremadura, Badajoz, Puerta de Palmas monumental gateway.