In 1976 I visited Rome for the first time. The trip was a tour, and we were shown the highlights, including the Forum Romanum, the Colosseum, the Vatican museum and Ostia.
Ofocure on my next visits, in 2009 for a day and in 2013 for two weeks I tried to find the same location of photos from 1976, shown on this page.

1976: Praktika SLR, Agfa slides, 29/55/135 lenses, Agfa slides. 2009: Canon S90, 2013:Canon G1 X.