Uaxactun calls the attention of particularly the archaeologists for five reasons: It possesses trails considered among the oldest in the Mayan territory: The 9 stelae that date from 8.14.10.13.15 (328 of the Christian era). It also contains 10 of the 13 stelaes that date in the Baktun 8, towards the end of which the Mayan began to erect stone monuments.

The Carnegie of Washington carried out archaeological studies, in this place for a twelve year period (1926-1937) during which valuable scientific data and archaeological material were gathered, including the most beautiful copies of vessels that found in the Mayan territory. Thanks to these excavations, we know more of this city than any other.
Because of the extensive excavations made in Uaxactun, the direct associations among architectural types and ceramic phases, and their corresponding dates approached in the Mayan chronology, has settled down with so much security that can serve as comparison terms in the completely Mayan area.

The first astronomical observatory of classic period was found and identified in Uaxactun. Same finding that helped to identify it from twelve to eighteen similar observatories in other classic period places.

A beautiful mural painting of the classic period was found in the B-XIII structure in Uaxactun that probably represents a religious ceremony. The figure consists of a woman seated on a stage, inside a plane roof building and outside other twenty-five individuals standing.

Under this scene is a horizontal band of 72 signs that begins from day 12 Imix and finishes with the day 5 Eb. Evidently, it is a Tzolkin, or sacred years of 260 days. This fresco tinted of red orange yellow, grey, and black on a white background. When discovered it was in an admirable conservation state. It probably dates from late classic period and is one of the oldest mural paintings in the Mayan Area.