3D scanner in the context of "Structured-light 3D scanner"

Surveying or land surveying is the technique, profession, art, and science of determining the terrestrial positions of points based on the distances and angles between them. These points are usually on the surface of the Earth, and they are often used to establish maps and boundaries for ownership, locations, such as the designated positions of structural components for construction or the surface location of subsurface features, or other purposes required by government or civil law, such as property sales.

A professional in land surveying is called a land surveyor.Surveyors work with elements of geodesy, geometry, trigonometry, regression analysis, physics, engineering, metrology, programming languages, and the law. They use equipment, such as total stations, robotic total stations, theodolites, GNSS receivers, retroreflectors, 3D scanners, lidar sensors, radios, inclinometer, handheld tablets, optical and digital levels, subsurface locators, drones, GIS, and surveying software.

The Historic Center (US) or Centre (UK) (Portuguese: Centro Histórico) of Salvador de Bahia in Brazil, also known as the Pelourinho (Portuguese for "Pillory") or Pelo, is a historic neighborhood in western Salvador, Bahia. It was the city's center during the Portuguese colonial period and was named for the whipping post in its central plaza where enslaved people from Africa were publicly beaten as punishment for alleged infractions. The Historic Center is extremely rich in historical monuments dating from the 17th through the 19th centuries.

Designated a UNESCO World Heritage Site, the Pelourinho retains a vibrant repertoire of colonial Portuguese architecture, exemplified by the Mannerist decoration of the Cathedral of Salvador, the Baroque intricacy of the Church and Convent of São Francisco and the Church of the Third Order of Our Lady of the Rosary of the Black People. In addition, the Pelourinho remains a cultural hub for the Afro-Brazilian community, whose cuisine, architecture, religion and music exert a salient influence on the neighborhood and testify to the "empowerment and influence of Afro cultures" in the New World. Although historical preservation efforts initiated in the 1990s enhanced safety, promoted tourism and facilitated greater economic development, they also resulted in the dislocation of Afro-Brazilian residents in the enclave and contributed to gentrification. As such, the development of the Pelourinho continues to attract attention in the gubernatorial politics of Bahia.

A hypogeum or hypogaeum (/ˌhaɪpəˈdʒiːəm/ HY-pə-JEE-əm; plural hypogea or hypogaea; literally meaning "underground") is an underground temple or tomb.

Hypogea will often contain niches for cremated human remains or loculi for buried remains. Occasionally tombs of this type are referred to as built tombs.