The last part of the day would be best suited to roam in Centro Storico. The so-called historical center is quite small and constitutes only around 4% of the city area. In the closing years of the Roman Republic, an open-aired theatre was built. Named after Emperor Augustus's nephew Marcus Marcellus, it is called the Theatre of Marcellus. This ancient edifice was one of the most important theatres in its times. You can ask your guide to give details about the formation of the Gate of Ottavia. One of the best-preserved of all Roman buildings is the Pantheon, which was built 1800 years ago. The name Pantheon refers to the building's original function as a temple for all the gods. The forty-three meter high dome is the remarkable feature of this structure. You can then walk to Piazza Navona to cover the Fountain of the Four Rivers by Bernini. Trevi fountain is the largest Baroque fountain in the city and one of the most famous fountains in the world.
Baroque is the most artistic period of Rome, which was embellished with sculpture, painting, architecture, literature, dance, and music around 1600. Taking Carlo Maderno's lead, Da Cortona, Bernini and Borromini created outstanding, major works of art. Try to cover as many of these great architectural world as you can. Most of it includes churches as during the Baroque period the Roman Catholic Church took artistic control in almost every respect. Besides churches there are numerous palaces, piazzas, and fountains that you can see. Make sure you have a guide and have some material with you with information on the many artists and their display of art here.