On the south end of the Maya ruins of Sayil, Mexico (along the “Puuc Route“):

Did I mention this is down on the south end of Sayil? It’s a good kilometer south of the bulk of the ruins, but a pretty easy walk (carry water, naturally). This was originally a 2-storey structure, but the top floor has completely collapsed. The Puuc Classic Mosaic false columns (they’re limestone veneer) on its façade are pretty impressive, though.