Piazza Cola di Rienzo

Roma Capitale's toponymy register carries an attribution of 1 January 1914 whose note reads Q. PRATI - quartiere, not rione - and a limit variation of 1 March 1954 noted R. PRATI. That single pair of entries is the best evidence this guide has for how late Prati was constituted a rione: the naming authority was still calling it a quartiere in 1914.