Piazza della Repubblica, Rome Piazza della Repubblica, Rome Piazza della Repubblica is a semi-circular piazza in Rome, at the summit of the Viminal Hill, next to the Termini station. On it is to be found Santa Maria degli Angeli e dei Martiri. It is served by the Repubblica – Teatro dell'Opera Metro station. From the square starts one of the main streets of Rome, Via Nazionale. The former name of the piazza, "Piazza dell'Esedra", still very common today, originates in the large exedra of the baths of Diocletian, which gives the piazza its shape. The porticos around the piazza, built in 1887–98 by Gaetano
Piazza Cordusio delle Poste (Palace of the Post Office), former Borsa di Milano" (former Milan Stock Exchange). Piazzale Cordusio hosts the Cordusio metro station and is the starting point of the elegant pedestrian Via Dante which leads to the imposing medieval Castello Sforzesco, or Milan Castle. Opposite to Via Dante, Cordusio borders onto Piazza Mercanti, former city centre in the Middle Ages, which leads directly to Piazza del Duomo, today's city centre. This palace is the main one in the square, and was built by architect Luca Beltrami from 1897 to 1901. It is the main headquarter of the mega-finance corporation Assicurazioni