Located between the Palazzo Senatorio and the Capitoline Museums, the Piazza del Campidoglio is a square planned by Michelangelo and Pope Paul III in as early as 1536, built in an effort to impress Charles V during his visit to Rome. The square is significant, facing away from the Roman Forum and turning instead to the city's Papal center, a sign of the new Rome. Most of the actual construction occurred after Michelangelo's lifetime, and the Piazza was finally complete in the 17th century.
You have to take subway B line and alight at Colosseo Station. From there, walk towards the northwest direction for around 15 minutes and you will reach your destination.
1.There are huge crowds of people in the square and so you have to be careful with your personal belongings and valuables while shopping there.