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In the quest of the Romans these are some of the places where you can start looking:
Colosseum
The Forum Romanum and other Fora
The Palatine
And all the other places around the city where they were long before you came,
in the Urbs and over the whole empire, see also
This is the place at the Forum Romanum where the body of Julius Caesar was cremated after he was murdered on the Ides of March, 44 BC.
The flowers were put there on the Ides of March in the year of 2007 AD.