In 1870s Italian army under the command of Raffaele Cadorna entered Rome and they occupied Leonine City. Rome and Latium were also annexed to Kingdom of Italy. In 1861, Rome was declared the capital of Italy. These colorized pictures capture ancient landmarks, streets, towns and famous monuments of Rome at the end of 19th century.

These photos were colorized using the photochrom process. This process was invented in the 1880s by a Swiss printer. A series of dyed limestones tablets were used to create a colorized version of a black and white negative image. This technique was widely used to produce some of earliest colorized pictures.