Palazzo Vecchio offers Roman ruins, a Medieval fortress and amazing Renaissance chambers and paintings. A microcosm where art and history have been indissolubly bound for centuries. Palazzo Vecchio is the main symbol of civil power for the city of Florence, whose original project is attributed to Arnolfo di Cambio. Construction on the solid fortress began in 1299 above the ruins of the destroyed Uberti Ghibelline towers, testimony of the final victory of the Guelph faction. The entire construction also rests on top of the ancient theater of the Roman colony of Florentia (dating back to the first century A.D.), whose ruins can be admired in the underground level. This area can be visited with a separate ticket or a combination ticket which includes the Palazzo Vecchio Museum and the Archaeological site. The area is suggestive organized with information and an interesting film to help you understand exactly what you are looking at underground. https://www.visitflorence.com/florence-monuments/palazzo-vecchio.html