Within the Main Structure, at an elevation of sixty feet, is a court one hundred and twenty feet square, which, with its surrounding architecture, must have presented a magnificent spectacle, when it was entire. It was entered from the south through a passage thirty feet in width, between two high pyramidal foundations, each supporting a temple. The court itself is inclosed by ranges of steps or seats rising to a height of twenty feet, as in an amphitheatre; they are built of great blocks of stone, neatly cut, and regularly laid without mortar. In the centre of the western side is a stairway projecting a few feet into the court, and leading to a broad terrace above the range of seats on that side. The upper steps in this stairway are divided in the midst by the head of a huge dragon facing the court, and holding in its distended jaws a grotesque human head of colossal proportions.
One temple, in many ways the most interesting yet explored, furnishes a typical example of this class of building. From the stone-paved terrace above the western side of the court, a great stairway, with massive steps, leads up to a platform which runs the whole length of the building, and is carried out at each end upon solid piers to the line of beginning of the steps. From the head of the stairway two graceful wing stones, extending across the platform, guard the approach to the first entrance, which gives access to the outer chambers. This doorway is nine feet wide, and was covered with a vaulted roof, now fallen. Directly opposite it, in the interior, is a second doorway, leading to the inner chambers. In front of this second entrance is a step two feet high, ornamented on the face by hieroglyphics and skulls carved in relief. At each end a huge death’s-head forms a pedestal for a crouching human figure supporting the head of a dragon, the body of which is turned upward, and is lost among the scrollwork and figures of a cornice that runs above the doorway. All the interior walls were covered with a thin coat of stucco, on which figures and scenes were painted in various colours; and the cornices were adorned with stucco masks and other ornaments, likewise painted. The roofs, with the massive towers which they supported, had fallen and filled the chambers completely. The horizontal arch formed by overlapping stones was always used in the construction of roofs—a type that is common to all the Maya cities. The outside of the building, profusely ornamented with grotesques at every line, bears witness to the ambitious prodigality of the architect, his love of adornment, and his aversion to plain surfaces—a characteristic that is manifested on all the monuments and carvings at Copan. An elaborate cornice with foliated design, adorned with plumage, all beautifully carved, ran around the four sides. Higher up, a row of portrait-like busts was also carried around the entire building. Whatever of plain surface remained was covered with pure white stucco, and the same material was used upon the sculptures to give a finish to the carving and a suitable surface for the colours that were used to produce the desired effect.