This article examines Middle and Late Preclassic period ritual activity and caches discovered in the Central E Group complex at the ancient Maya site of Cival, which is located in northeastern Peten, Guatemala. It focuses on a series of excavations conducted in 2013 and 2014 at Structure 9, the E Group's western radial pyramid and uses theories of social memory and sacred place to provide insight into the recently discovered caches, termination rituals, and the deliberate destruction of architectural features found there. It also draws on previous ritual activity conducted in the Central E Group plaza and the site's broader history to obtain a more comprehensive understanding of the role of this complex as a sacred place and hub of memory at Cival for more than 1,000 years.

In the area along the southern Gulf Coast in Mexico, a large number of previously unrecorded archaeological sites have recently been detected with the aid of lidar data, which also allowed us to determine the orientations of hundreds of structures and architectural assemblages, including many standardized complexes dated to the Early-to-Middle Formative transition. As revealed by our analyses, most orientations were based on astronomical and calendrical principles, occasionally combined with certain concepts of sacred geography. While the results of these analyses were presented in a recently published article, here we explore the potential of alignment data for addressing other questions of archaeological relevance. The distribution of particular building types and regional variations in alignment patterns in the study area suggest the existence of two somehow different cultural spheres, loosely corresponding to the areas conventionally called the Gulf Olmec region and the western Maya Lowlands. Examining pertinent evidence, we argue that it was in this area where some of the most prominent orientation groups materialized in later Mesoamerican architecture originated. We also attempt to reconstruct the paths of their diffusion, which are expected to contribute to understanding the dynamics of long-distance cultural interaction in Mesoamerica.

Research on hardened daub fragments provides highly relevant data on the building activities of past societies. Unfortunately, in many cases these elements are not considered relevant research objects, resulting in a very important loss of information for archaeology. There is still a long way to go in the studies of earth building remains, the vast majority of which have focused on assemblages coming from specific sites. Likewise, a good number of these studies carried out from a macroscopic approach either have not published the methodology used or barely offer some considerations about it. This article approaches the methodological procedures for their analysis through direct observation, while hoping to contribute to making these remains more visible and to facilitate and promote their study. This methodological proposal can be applicable to materials of different composition and from very different contexts, chronologies, and origins.

Although direct evidence of civic planning is rare among Mesoamerican sites, such features offer great insight into past practices, intentions, and urban transformation. Using data from the transition to the Late Formative period (ca. 400–300 BC), I argue that direct evidence of urban planning is present in the monumental constructions of Yaxuná in Yucatán, Mexico. There, investigators detected a series of carefully rendered incised lines directly on Floor 6 of the E Group plaza. Along with the buildings' exposed surfaces, incised lines served as visual markers for placing rubble and dry-core fill into two categories: large dry-core stones and small compact fill. These visual distinctions informed the location of features built on top of this fill, including Floor 5 and a causeway spanning the plaza's central axis, distinguished from the white floor surface sascab (a durable product of pulverized limestone) by a red-orange color. The incised lines at Yaxuná grant insight into how ancient builders envisioned public works and then implemented and completed features in a step-by-step design process, which required precision and foresight.

To understand Middle Preclassic social processes at Cahal Pech, we must consider the dynamic and complex record of architectural development in its entirety.

In this article, we present the most significant results of the Monte Albán Geophysical Archaeology Project. Using ground-penetrating radar, gradiometry, and electrical resistance, we carried out a systematic survey of the site's Main Plaza to identify buried prehispanic features that might shed light on Monte Albán's early history. The most important discoveries include three buried structures dating between the Danibaan (500–300 BC) and Nisa phases (100 BC–AD 100). We argue that the largest structure, measuring 18 × 18 m, was probably a temple platform and that all three of the structures were razed and buried by the end of the Nisa phase at the latest. Furthermore, we contend that these events were part of a major renovation and expansion of the site's Main Plaza that occurred during a pivotal period of dramatic sociopolitical transformation in the Zapotec capital.

In the past decade, archaeologists have increasingly made use of photogrammetry, the process of creating 3D models from photographs, in a variety of field and lab settings. We argue that we must, as a discipline, develop a consistent methodology to ensure that 3D models are held to a consistent standard, including not only photographic protocol but also the documentation of model accuracy using an agreed-upon measure. To help develop this discussion, we present our system for incorporating photogrammetry into the documentation of architecture. This technique was developed at the site of Nim Li Punit, Belize, in 2018. Excavating architecture involves documenting the pre-excavated building, liberating overburden, documenting all in situ construction (including wall fall, fill stones, and standing architecture), drawing consolidated architecture, and documenting the final state of the post-excavated buildings. The generation of 3D models greatly assisted in all facets of the excavation, documentation, analysis, and consolidation processes. To ensure that our models were accurate, we documented the reprojection error and final model horizontal distortion to assess the quality of the model. We suggest that documenting both forms of error should become standard practice in any discussion of archaeological applications of photogrammetry.

Teotihuacan underwent an urban renewal during the Tlamimilolpa phase (AD 250–350) in which more than 2,000 apartment compounds were constructed to accommodate its estimated 100,000 residents. Although the orderly layout and canonical orientation of the city imply top-down planning, growing evidence suggests a bottom-up process of urban transformation. This study combines architectural energetics with archaeometric analysis of nonlocal construction materials (lime plaster and andesitic cut stone blocks) to examine the labor organization behind the construction of the apartment compounds. The results of the energetic analysis suggest that residents relied on labor forces external to their compounds, whereas materials analysis indicates that the procurement, transportation, and production of building material were centrally organized and thus indicative of a state labor tax. Based on these results, I argue that compounds were assembled through corporate group labor exchange or communal (neighborhood-level) labor cooperation/obligation, with differing degrees of support from the state labor tax. Apartment compound construction was not uniform but rather a diverse process in which state labor mobilization, communal labor obligations, and corporate labor exchange were articulated in various ways.

The morphological study of architectural features, the building arrangement within urban spaces, and multiscalar variation are critical for understanding urbanism as a process. Building types and architectural typologies form the foundational blocks of urban morphology and are essential for identifying architectural patterning. We use a process-typological approach to present an architectural typology from the ancient Purépecha (Tarascan) city of Angamuco, located in the Lake Pátzcuaro Basin, Michoacán, Mexico. Using archaeological survey, lidar analysis, and excavation, we analyze building foundations from houses and public structures; storage facilities; monumental architecture such as pyramids, altars, and public buildings; and landscape features such as plazas, roads, terraces, and raised roadways locally known as huatziri. Our typology enhances understanding of the dense urban environment of this important prehispanic city during and after the formation of the Purépecha Empire.