Xpuhil is a striking example of the Río Bec style. The three towers (rather than the usual two) of Estructura I rise above a dozen vaulted rooms. The central tower, soaring 53m, is the best preserved. With its banded tiers and impractically steep stairways leading up to a temple that displays traces of a zoomorphic mask, it gives a good idea of what the other two must have looked like back in Xpuhil’s 8th-century heyday. Go around back to see a fierce jaguar mask embedded in the wall below the temple.