This was installed in the city in the year 426 AD, due to Teotihuacan influence and military support from the ruler Sihyaj Chan K'awiil II of Tikal, who ruled between the 5th and 9th centuries.

The architectural works (buildings, pyramids, statues, temples, altars and sports centers) built in Copán during the rule of the Yax K'uk Mo' dynasty are preserved to this day, being accessible to the general public.

K'inich Yax K'uk 'Mo' may have tried to legitimize his position as king by marrying into the old royal family of Copán, which is evidenced by the remains of his presumed widow.

[4][5][6] Although the Mayan texts referring to the founding of the new Copan dynasty do not include a description of K'uk 'Mo's arrival in the city, there is indirect evidence to suggest that he conquered it militarily.

When he arrived in Copán, he began the construction of several architectural structures, including a temple in the talud-tablero style very typical of Teotihuacán, and another with recessed corners and moldings that are characteristic of Tikal.

Next in line was K'inich Popol Hol, son of Yax Kuk Mo, who oversaw the construction of the first version of the Mesoamerican ballcourt in the city, which was decorated with images of the scarlet macaw, a bird which occupies a prominent place in Mayan mythology.