Situated near the south-east corner of the Main Building, the Mexican Pavilion was an octagon-shaped iron structure, seventy-eight feet across, topped by an eagle-crowned gilded dome. The entrance to the multi-colored Moorish-style building consisted of an ornate portico, with a prominent sign overhead containing the Mexican coat-of-arms and "Mexican Mining Pavilion", in gilded letters. Twenty-one large arched windows, of delicately patterned colored-glass, were located in the building's other seven walls. Within the pavilion were large glass display-cases, arranged in two circles, in which were placed a multitude of rare minerals and gems from each of Mexico's mineral States. Fine specimens of gold, silver, copper, iron, zinc, and lead were displayed; in addition to fine examples of jewelry, set with numerous gems and other precious stones. Beneath the dome, at the center of the pavilion, was constructed a small pyramid of precious metals; while collections of various tropical shrubs were placed beneath the colored-glass windows surrounding the building.