Empire. Other large adobe structures are the Huaca del Sol in Peru, with 100 million signed bricks and the ciudellas of Chan Chan and Tambo Colorado, both in Peru. See also used adobe walls (waterproofing plaster) (also known as Ctesiphon Arch) in Iraq is the largest mud brick arch in the world, built beginning in 540 AD References External links Soil-based building materials Masonry Adobe buildings and structures Appropriate technology Vernacular architecture Sustainable building Buildings and structures by construction material Western (genre) staples and terminology