The remains of Pompeii’s city walls are 2 miles (3 km) in circumference, and they enclose an area of about 163 acres (66 hectares). Several city gates have been excavated. There are many remains of public buildings, generally grouped in three areas: the Forum, located in the large level area to the southwest; the Triangular Forum, standing on a height at the edge of the south wall overlooking the bay; and the Amphitheatre and Palaestra, in the east. Hundreds of private homes of various architectural styles have also been excavated at Pompeii.