Scenes from THE FALL OF THE ROMAN EMPIRE (1964)
This is a mega-production and there's very little information of the use of special effects in the movie since humongous sets were built so people assumed everything in the movie was built full scale. It wasn't. The top shot is definitely a matte painting. The structures behind the wall give it away. This shot has a left to right pan.
There are many big statues in the movie and the one below is definitely a special effects. Reading the credits at IMDb, this is most likely a foreground miniature and not matte painting. Francisco Prosper is credited for foreground miniature work. I recently explained the use of foreground models with THE GIANTS OF THESSALY (1960).