The conclusion drawn from the information provided is that the architecture of the Palace of Fine Arts features a continuous theme of imagery from Indigenous people despite being designed by two different architects.
How to explain
Both Boari and Mariscal drew inspiration from Indigenous cultures, incorporating elements like the eagle and snake, symbolizing an Aztec legend, as well as taking cues from ancient Mesoamerican architectural traditions.
This consistency in Indigenous imagery signifies a common theme in the building's design, unifying the work of the two architects despite their contributions.
With this, it can be seen that the conclusion drawn from the information provided is that the architecture of the Palace of Fine Arts features a continuous theme of imagery