Almost everything in Rome has an official name and a roman name, especially monuments. That's because Rome's citizens swing between a conservative and a progressist mentality. So, we have the greatest number of Web agencies in Italy, and Lazio PIL (Prodotto Interno Lordo)'s one of the highest in our country, but we're not able to change a name in the City even after 500 years.

Here's a list of official/roman names with indication wether the roman name was the former:

OFFICIAL/ROMAN

Piazza della Repubblica/Piazza Esedra (former)

Monumento a Vittorio Emanuele II anche Vittoriano anche Altare della Patria/Torta nuziale (wedding cake) o Macchina da scrivere (typewriter). Not so loved by Romans, isn't it?

Anfiteatro Flavio/Colosseo (ebbene sì, il Colosseo non si chiama Colosseo...)

Obelisco della Minerva/Pulcino della Minerva ("pulcino" instead of "porcino" - little pig - too outrageous) in piazza Santa Maria sopra Minerva

Galleria Alberto Sordi/Galleria Colonna (former)

[...to be continued...]