The Cromlech of the Almendres megalithic complex (or Almendres Cromlech), located near Guadalupe, in the civil parish of Nossa Senhora de Guadalupe, municipality of Évora, is the largest existing group of structured menhirs in the Iberian Peninsula, and one of the largest in Europe. This archaeological site consists of several megalithic structures: cromlechs, ...

The Astronomy Tower of the Sorbonne is a tower at the Sorbonne University's Paris campus built to house an astronomical observatory for its students. The structure was erected during the reconstruction of the Sorbonne, between 1885 and 1901. The tower is 39 meters high, has an upper and lower dome, and includes several rooms. The upper dome houses the telescope, and t...

Night Tours Our night programs will vary with the phase of the moon, sunset times, and sky conditions and include live-stack imaging of a deep sky object, a laser constellation tour, stargazing/moon views from our Observatory Deck through our telescopes; and/or tours of our facility as appropriate. Our telescopes: As an expert in optics fabrication, Ron taught telesco...

Beijing Ancient Observatory is a pretelescopic observatory located in Beijing, China. The observatory was built in 1442 during the Ming dynasty, and expanded during the Qing. It received major reorganization and many new, more accurate instruments from Europeans (Jesuits) in 1644. As one of the oldest observatories in the world, the Beijing Ancient Observatory ground...

The Big Bear Solar Observatory (BBSO) is a solar observatory located on the north side of Big Bear Lake in the San Bernardino Mountains of southwestern San Bernardino County, California (USA), approximately 120 kilometers (75 mi) east of downtown Los Angeles. The telescopes and instruments at the observatory are designed and employed specifically for studying the acti...

Clifton Observatory (grid reference ST564733) is a former mill, now used as an observatory, located on Clifton Down, close to the Clifton Suspension Bridge, Bristol, England. The building was erected, with the permission of the Society of Merchant Venturers, as a windmill for corn in 1766 and later converted to the grinding of snuff, when it became known as 'The Snuff...

Griffith Observatory is in Los Angeles, California, United States. Sitting on the south-facing slope of Mount Hollywood in L.A.'s Griffith Park, it commands a view of the Los Angeles Basin, including downtown Los Angeles to the southeast, Hollywood to the south, and the Pacific Ocean to the southwest. The observatory is a popular tourist attraction with an extensive a...

The Indian Astronomical Observatory (IAO) is a high-altitude astronomy station located in Hanle, India and operated by the Indian Institute of Astrophysics. Situated in the Western Himalayas at an elevation of 4,500 meters (14,764 ft), the IAO is one of the world's highest located sites for optical, infrared and gamma-ray telescopes. It is currently the tenth (se...

The Jodrell Bank Observatory is a British observatory that hosts a number of radio telescopes, and is part of the Jodrell Bank Centre for Astrophysics at the University of Manchester. The observatory was established in 1945 by Sir Bernard Lovell, who wanted to investigate cosmic rays after his work on radar during the Second World War. It has since played an important...

The Kitt Peak National Observatory (KPNO) is a United States astronomical observatory site located on 2,096 m (6,880 ft) Kitt Peak of the Quinlan Mountains in the Arizona-Sonoran Desert on the Tohono O'odham Nation, 88 kilometers (55 mi) southwest of Tucson. With 24 optical and two radio telescopes, it is the largest, most diverse gathering of astronomical instru...

Leviathan of Parsonstown is the unofficial name of the Rosse six foot telescope. This is a historic reflecting telescope of 72 in (1.8 m) aperture, which was the largest telescope in the world from 1845 until the construction of the 100 in (2.5 m) Hooker Telescope in 1917. The Rosse six foot telescope was built by William Parsons, 3rd Earl of Rosse on his estate, Birr...

The Magdalena Ridge Observatory (MRO) is an astronomical observatory in Socorro County, New Mexico, about 32 kilometers (20 mi) west of the town of Socorro. The observatory is located in the Magdalena Mountains near the summit of South Baldy Mountain, adjacent to the Langmuir Laboratory for Atmospheric Research. Currently operational at the site (since 2008) is a...

The Maryland Science Center, located in Baltimore's Inner Harbor, opened to the public in 1976. It includes three levels of exhibits, a planetarium, and an observatory. It was one of the original structures that drove the revitalization of the Baltimore Inner Harbor from its industrial roots to a thriving downtown destination. In 1987, an IMAX theater was added, but t...

The Observatories at Mauna Kea (MKO) are an independent collection of astronomical research facilities located on the summit of Mauna Kea on the Big Island of Hawai'i, USA. The facilities are located in a 500-acre (2.0 km2) special land use zone known as the "Astronomy Precinct," which is located in the Mauna Kea Science Reserve. The Astronomy Precinct was established...

Meyer–Womble Observatory (MWO) is an astronomical observatory owned and operated by the University of Denver. It is located near the summit of Mount Evans in the Arapaho National Forest approximately 60 kilometers (37 mi) west of Denver, Colorado (USA). At an elevation of 4,326 meters (14,193 ft), it is the third-highest optical/infrared observatory in the world...