WThe Cahokia Woodhenge was a series of large timber circles located roughly 850 metres (2,790 ft) to the west of Monks Mound at the Mississippian culture Cahokia archaeological site near Collinsville, Illinois. They are thought to have been constructed between 900 and 1100 CE; with each one being larger and having more posts than its predecessor. The site was discovered as part of salvage archaeology in the early 1960s interstate highway construction boom, and one of the circles was reconstructed in the 1980s. The circle has been used to investigate archaeoastronomy at Cahokia. Annual equinox and solstice sunrise observation events are held at the site.
WMonte Catequilla is an archaeological site in the Pomasqui Valley of Ecuador. Located in the Parish of San Antonio of Quito Canton in Pichincha Province, it has an elevation of 2,638 metres (8,655 ft) and is located on a mountaintop about 300 metres (980 ft) above valleys on either side. Attributed to the Pre-Columbian era Quitu-Cara culture, it was presumably used as an astronomical observatory even before the arrival of the Incas, and is the only prehispanic site in the Americas that is located precisely at the Earth's Equator.
WE-Groups are unique architectural complexes found among a number of ancient Maya settlements. They are central components to the settlement organization of Maya sites and could have served as astronomical observatories. The alignment of these structural complexes corresponds to the sun's solstices and equinoxes.
WThe Jantar Mantar is an equinoctial sundial, consisting of a gigantic triangular gnomon with the hypotenuse parallel to the Earth's axis. On either side of the gnomon is a quadrant of a circle, parallel to the plane of the equator. The instrument is intended to measure the time of day, correct to half a second and declination of the moon 🌝 and the other heavenly bodies.fisa
WThe Jantar Mantar is a collection of nineteen architectural astronomical instruments built by the Rajput king Sawai Jai Singh II, the founder of Jaipur, Rajasthan. The monument was completed in 1734. It features the world's largest stone sundial, and is a UNESCO World Heritage site. It is located near City Palace and Hawa Mahal. The instruments allow the observation of astronomical positions with the naked eye. The observatory is an example of the Ptolemaic positional astronomy which was shared by many civilizations.
WMound 72 is a small ridgetop mound located roughly 850 meters (2,790 ft) to the south of Monks Mound at Cahokia Mounds near Collinsville, Illinois. Early in the site's history, the location began as a circle of 48 large wooden posts known as a "woodhenge". The woodhenge was later dismantled and a series of mortuary houses, platform mounds, mass burials and eventually the ridgetop mound erected in its place. The mound was the location of the "beaded burial", an elaborate burial of an elite personage thought to have been one of the rulers of Cahokia, accompanied by the graves of several hundred retainers and sacrificial victims.
WThe Mundo Perdido is the largest ceremonial complex dating from the Preclassic period at the ancient Maya city of Tikal, in the Petén Department of northern Guatemala. The complex was organised as a large E-Group astronomical complex consisting of a pyramid aligned with a platform to the east that supported three temples. The Mundo Perdido complex was rebuilt many times over the course of its history. By AD 250–300 its architectural style was influenced by the great metropolis of Teotihuacan in the Valley of Mexico, including the use of the talud-tablero form. During the Early Classic period the Mundo Perdido became one of the twin foci of the city, the other being the North Acropolis. From AD 250 to 378 it may have served as the royal necropolis. The Mundo Perdido complex was given its name by the archaeologists of the University of Pennsylvania.