The Temple in the Group de las Pinturas (Painting Complex) has preserved traces of hieroglyphs and frescoes above the door, as well as remnants of richly painted plaster inside. The Painting Complex, in turn, stands out for its pyramid (the smallest in all of Cobá) and the frescoes that once covered its walls, from which the remains of beautiful paintings from a distant and enchanting era can still be distinguished. Here, small but powerful colorful fragments can be seen on the walls of the four-tiered pyramid. Despite its more modest size, this temple is of great significance because it houses late-period Cobá structures built from dressed stone and building materials from older constructions.

Next to the main pyramid is a garden consisting of 5 buildings and 13 altars; this is a group of ceremonial buildings, two of which still have remnants of paintings, and numerous stelae are also found there. The Maya conducted sacred rituals here. On the stelae, the Maya usually described relevant events from their lives as well as astronomical occurrences. Here, the combination of two professional periods is clearly traced: the Classic and Postclassic, when earlier buildings were reused for constructions from later periods.

Sources:

https://www.themayanruinswebsite.com/coba2.html

https://pueblosoriginarios.com/meso/maya/sitios/coba_coba.html